102112001010221 has 4 divisors (see below), whose sum is σ = 102112043769792. Its totient is φ = 102111958250652.

The previous prime is 102112001010181. The next prime is 102112001010233. The reversal of 102112001010221 is 122010100211201.

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.

It is a cyclic number.

It is not a de Polignac number, because 102112001010221 - 2⁶ = 102112001010157 is a prime.

It is a super-2 number, since 2×102112001010221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 102112001010196 and 102112001010205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102112001010241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17571605 + ... + 22649178.

It is an arithmetic number, because the mean of its divisors is an integer number (25528010942448).

Almost surely, 2^{102112001010221} is an apocalyptic number.

It is an amenable number.

102112001010221 is a deficient number, since it is larger than the sum of its proper divisors (42759571).

102112001010221 is an equidigital number, since it uses as much as digits as its factorization.

102112001010221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42759570.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 102112001010221 its reverse (122010100211201), we get a palindrome (224122101221422).

The spelling of 102112001010221 in words is "one hundred two trillion, one hundred twelve billion, one million, ten thousand, two hundred twenty-one".