21022111020102 has 8 divisors (see below), whose sum is σ = 42044222040216. Its totient is φ = 7007370340032.

The previous prime is 21022111020101. The next prime is 21022111020107. The reversal of 21022111020102 is 20102011122012.

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

21022111020102 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022111020101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1751842585003 + ... + 1751842585014.

It is an arithmetic number, because the mean of its divisors is an integer number (5255527755027).

Almost surely, 2^{21022111020102} is an apocalyptic number.

21022111020102 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21022111020102 is a wasteful number, since it uses less digits than its factorization.

21022111020102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3503685170022.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21022111020102 its reverse (20102011122012), we get a palindrome (41124122142114).

The spelling of 21022111020102 in words is "twenty-one trillion, twenty-two billion, one hundred eleven million, twenty thousand, one hundred two".