102021221212211 has 48 divisors (see below), whose sum is σ = 118425405288960. Its totient is φ = 86094226080000.

The previous prime is 102021221212199. The next prime is 102021221212237. The reversal of 102021221212211 is 112212122120201.

It is not a de Polignac number, because 102021221212211 - 2³⁸ = 101746343305267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102021221212291) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9623730311 + ... + 9623740911.

It is an arithmetic number, because the mean of its divisors is an integer number (2467195943520).

Almost surely, 2^{102021221212211} is an apocalyptic number.

102021221212211 is a deficient number, since it is larger than the sum of its proper divisors (16404184076749).

102021221212211 is a wasteful number, since it uses less digits than its factorization.

102021221212211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11556 (or 11455 counting only the distinct ones).

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

Adding to 102021221212211 its reverse (112212122120201), we get a palindrome (214233343332412).

The spelling of 102021221212211 in words is "one hundred two trillion, twenty-one billion, two hundred twenty-one million, two hundred twelve thousand, two hundred eleven".