102221221112021 has 16 divisors (see below), whose sum is σ = 111725203357440. Its totient is φ = 92752559281920.

The previous prime is 102221221111963. The next prime is 102221221112053. The reversal of 102221221112021 is 120211122122201.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102221221112021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102221221111984 and 102221221112002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102221221012021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12520121 + ... + 19005153.

It is an arithmetic number, because the mean of its divisors is an integer number (6982825209840).

Almost surely, 2^{102221221112021} is an apocalyptic number.

102221221112021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102221221112021 is a deficient number, since it is larger than the sum of its proper divisors (9503982245419).

102221221112021 is a wasteful number, since it uses less digits than its factorization.

102221221112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6487756.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 102221221112021 its reverse (120211122122201), we get a palindrome (222432343234222).

The spelling of 102221221112021 in words is "one hundred two trillion, two hundred twenty-one billion, two hundred twenty-one million, one hundred twelve thousand, twenty-one".