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103221401 = 234487887
BaseRepresentation
bin1100010011100…
…00100010011001
321012020012010212
412021300202121
5202411041101
614124220505
72362240013
oct611604231
9235205125
10103221401
11532a1848
122a69a735
1318500b6a
14d9cd1b3
1590de1bb
hex6270899

103221401 has 4 divisors (see below), whose sum is σ = 107709312. Its totient is φ = 98733492.

The previous prime is 103221341. The next prime is 103221403. The reversal of 103221401 is 104122301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 104122301 = 211349277.

It is a cyclic number.

It is not a de Polignac number, because 103221401 - 26 = 103221337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103221403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2243921 + ... + 2243966.

It is an arithmetic number, because the mean of its divisors is an integer number (26927328).

Almost surely, 2103221401 is an apocalyptic number.

It is an amenable number.

103221401 is a deficient number, since it is larger than the sum of its proper divisors (4487911).

103221401 is an equidigital number, since it uses as much as digits as its factorization.

103221401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4487910.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 103221401 is about 10159.7933541977. The cubic root of 103221401 is about 469.0904410185.

Adding to 103221401 its reverse (104122301), we get a palindrome (207343702).

The spelling of 103221401 in words is "one hundred three million, two hundred twenty-one thousand, four hundred one".

Divisors: 1 23 4487887 103221401