21220000202102 has 32 divisors (see below), whose sum is σ = 36654196922784. Its totient is φ = 9126472896000.

The previous prime is 21220000202101. The next prime is 21220000202123. The reversal of 21220000202102 is 20120200002212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21220000202101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 237623924 + ... + 237713207.

It is an arithmetic number, because the mean of its divisors is an integer number (1145443653837).

Almost surely, 2^{21220000202102} is an apocalyptic number.

21220000202102 is a deficient number, since it is larger than the sum of its proper divisors (15434196720682).

21220000202102 is a wasteful number, since it uses less digits than its factorization.

21220000202102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475337264.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 21220000202102 its reverse (20120200002212), we get a palindrome (41340200204314).

The spelling of 21220000202102 in words is "twenty-one trillion, two hundred twenty billion, two hundred two thousand, one hundred two".