21220012022102 has 32 divisors (see below), whose sum is σ = 33390915876864. Its totient is φ = 10101453667200.

The previous prime is 21220012022063. The next prime is 21220012022129. The reversal of 21220012022102 is 20122021002212.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3105443 + ... + 7216910.

It is an arithmetic number, because the mean of its divisors is an integer number (1043466121152).

Almost surely, 2^{21220012022102} is an apocalyptic number.

21220012022102 is a deficient number, since it is larger than the sum of its proper divisors (12170903854762).

21220012022102 is a wasteful number, since it uses less digits than its factorization.

21220012022102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10322924.

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

Adding to 21220012022102 its reverse (20122021002212), we get a palindrome (41342033024314).

The spelling of 21220012022102 in words is "twenty-one trillion, two hundred twenty billion, twelve million, twenty-two thousand, one hundred two".