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10022121 = 321113569
BaseRepresentation
bin100110001110…
…110011101001
3200212011202200
4212032303221
510031201441
6554450413
7151121004
oct46166351
920764680
1010022121
11572584a
123433a09
1320cb965
14148c53b
15d2e7b6
hex98ece9

10022121 has 6 divisors (see below), whose sum is σ = 14476410. Its totient is φ = 6681408.

The previous prime is 10022119. The next prime is 10022123. The reversal of 10022121 is 12122001.

It is an interprime number because it is at equal distance from previous prime (10022119) and next prime (10022123).

It can be written as a sum of positive squares in only one way, i.e., 9000000 + 1022121 = 3000^2 + 1011^2 .

It is not a de Polignac number, because 10022121 - 21 = 10022119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 1113569 = 10022121 / (1 + 0 + 0 + 2 + 2 + 1 + 2 + 1).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10022123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 556776 + ... + 556793.

It is an arithmetic number, because the mean of its divisors is an integer number (2412735).

Almost surely, 210022121 is an apocalyptic number.

It is an amenable number.

10022121 is a deficient number, since it is larger than the sum of its proper divisors (4454289).

10022121 is a wasteful number, since it uses less digits than its factorization.

10022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113575 (or 1113572 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 10022121 is about 3165.7733652301. The cubic root of 10022121 is about 215.6022128408.

Adding to 10022121 its reverse (12122001), we get a palindrome (22144122).

The spelling of 10022121 in words is "ten million, twenty-two thousand, one hundred twenty-one".

Divisors: 1 3 9 1113569 3340707 10022121