102221111012210 has 32 divisors (see below), whose sum is σ = 194876618560560. Its totient is φ = 38472336709632.

The previous prime is 102221111012203. The next prime is 102221111012219. The reversal of 102221111012210 is 12210111122201.

It can be written as a sum of positive squares in 8 ways, for example, as 50699967992881 + 51521143019329 = 7120391^2 + 7177823^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (102221111012219) 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 15 ways as a sum of consecutive naturals, for example, 84594269 + ... + 85794128.

Almost surely, 2^{102221111012210} is an apocalyptic number.

102221111012210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102221111012210 is a deficient number, since it is larger than the sum of its proper divisors (92655507548350).

102221111012210 is a wasteful number, since it uses less digits than its factorization.

102221111012210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170391950.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 102221111012210 its reverse (12210111122201), we get a palindrome (114431222134411).

The spelling of 102221111012210 in words is "one hundred two trillion, two hundred twenty-one billion, one hundred eleven million, twelve thousand, two hundred ten".