102212022110021 has 4 divisors (see below), whose sum is σ = 104140550829132. Its totient is φ = 100283493390912.

The previous prime is 102212022109993. The next prime is 102212022110117. The reversal of 102212022110021 is 120011220212201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 86203332930625 + 16008689179396 = 9284575^2 + 4001086^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102212022110021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102212022113021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 964264359476 + ... + 964264359581.

It is an arithmetic number, because the mean of its divisors is an integer number (26035137707283).

Almost surely, 2^{102212022110021} is an apocalyptic number.

It is an amenable number.

102212022110021 is a deficient number, since it is larger than the sum of its proper divisors (1928528719111).

102212022110021 is an equidigital number, since it uses as much as digits as its factorization.

102212022110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1928528719110.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 102212022110021 its reverse (120011220212201), we get a palindrome (222223242322222).

The spelling of 102212022110021 in words is "one hundred two trillion, two hundred twelve billion, twenty-two million, one hundred ten thousand, twenty-one".