102101222022221 has 32 divisors (see below), whose sum is σ = 104858862958080. Its totient is φ = 99392051678400.

The previous prime is 102101222022181. The next prime is 102101222022223. The reversal of 102101222022221 is 122220222101201.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102101222022221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102101222022193 and 102101222022202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102101222022223) 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, 1894560686 + ... + 1894614576.

It is an arithmetic number, because the mean of its divisors is an integer number (3276839467440).

Almost surely, 2^{102101222022221} is an apocalyptic number.

It is an amenable number.

102101222022221 is a deficient number, since it is larger than the sum of its proper divisors (2757640935859).

102101222022221 is a wasteful number, since it uses less digits than its factorization.

102101222022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55337.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 102101222022221 its reverse (122220222101201), we get a palindrome (224321444123422).

The spelling of 102101222022221 in words is "one hundred two trillion, one hundred one billion, two hundred twenty-two million, twenty-two thousand, two hundred twenty-one".