102110010021221 has 8 divisors (see below), whose sum is σ = 102320399580480. Its totient is φ = 101899623405888.

The previous prime is 102110010021199. The next prime is 102110010021247. The reversal of 102110010021221 is 122120010011201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102110010021221 - 2⁶ = 102110010021157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102110010021196 and 102110010021205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102110010021521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77194550 + ... + 78506168.

It is an arithmetic number, because the mean of its divisors is an integer number (12790049947560).

Almost surely, 2^{102110010021221} is an apocalyptic number.

It is an amenable number.

102110010021221 is a deficient number, since it is larger than the sum of its proper divisors (210389559259).

102110010021221 is a wasteful number, since it uses less digits than its factorization.

102110010021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1471963.

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

Adding to 102110010021221 its reverse (122120010011201), we get a palindrome (224230020032422).

The spelling of 102110010021221 in words is "one hundred two trillion, one hundred ten billion, ten million, twenty-one thousand, two hundred twenty-one".