21201022022102 has 8 divisors (see below), whose sum is σ = 34247804804976. Its totient is φ = 9785087087112.

The previous prime is 21201022022017. The next prime is 21201022022123. The reversal of 21201022022102 is 20122022010212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 407711961938 + ... + 407711961989.

It is an arithmetic number, because the mean of its divisors is an integer number (4280975600622).

Almost surely, 2^{21201022022102} is an apocalyptic number.

21201022022102 is a deficient number, since it is larger than the sum of its proper divisors (13046782782874).

21201022022102 is a wasteful number, since it uses less digits than its factorization.

21201022022102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815423923942.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 21201022022102 its reverse (20122022010212), we get a palindrome (41323044032314).

The spelling of 21201022022102 in words is "twenty-one trillion, two hundred one billion, twenty-two million, twenty-two thousand, one hundred two".