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BaseRepresentation
bin100110100111…
…001100100101
3201001020210200
4212213030211
510042401041
61000541113
7152015160
oct46471445
921036720
1010122021
115793908
123481799
132135280
15d4e1b6
hex9a7325

10122021 has 48 divisors (see below), whose sum is σ = 19079424. Its totient is φ = 5018112.

The previous prime is 10122011. The next prime is 10122043. The reversal of 10122021 is 12022101.

10122021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10122021 - 210 = 10120997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10121994 and 10122012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10122011) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13560 + ... + 14286.

It is an arithmetic number, because the mean of its divisors is an integer number (397488).

Almost surely, 210122021 is an apocalyptic number.

It is an amenable number.

10122021 is a deficient number, since it is larger than the sum of its proper divisors (8957403).

10122021 is a wasteful number, since it uses less digits than its factorization.

10122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770 (or 767 counting only the distinct ones).

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

The square root of 10122021 is about 3181.5123762136. The cubic root of 10122021 is about 216.3162163712.

Adding to 10122021 its reverse (12022101), we get a palindrome (22144122).

It can be divided in two parts, 101 and 22021, that added together give a palindrome (22122).

The spelling of 10122021 in words is "ten million, one hundred twenty-two thousand, twenty-one".