102211222221021 has 32 divisors (see below), whose sum is σ = 141665674405248. Its totient is φ = 65493711993600.

The previous prime is 102211222221013. The next prime is 102211222221041. The reversal of 102211222221021 is 120122222112201.

It is not a de Polignac number, because 102211222221021 - 2³ = 102211222221013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102211222221041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90657655 + ... + 91778171.

It is an arithmetic number, because the mean of its divisors is an integer number (4427052325164).

Almost surely, 2^{102211222221021} is an apocalyptic number.

It is an amenable number.

102211222221021 is a deficient number, since it is larger than the sum of its proper divisors (39454452184227).

102211222221021 is a wasteful number, since it uses less digits than its factorization.

102211222221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130541.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 102211222221021 its reverse (120122222112201), we get a palindrome (222333444333222).

The spelling of 102211222221021 in words is "one hundred two trillion, two hundred eleven billion, two hundred twenty-two million, two hundred twenty-one thousand, twenty-one".