21120100222102 has 32 divisors (see below), whose sum is σ = 37012138910784. Its totient is φ = 8851623753600.

The previous prime is 21120100222099. The next prime is 21120100222153. The reversal of 21120100222102 is 20122200102112.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71328549 + ... + 71624032.

It is an arithmetic number, because the mean of its divisors is an integer number (1156629340962).

Almost surely, 2^{21120100222102} is an apocalyptic number.

21120100222102 is a deficient number, since it is larger than the sum of its proper divisors (15892038688682).

21120100222102 is a wasteful number, since it uses less digits than its factorization.

21120100222102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142952824.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21120100222102 its reverse (20122200102112), we get a palindrome (41242300324214).

The spelling of 21120100222102 in words is "twenty-one trillion, one hundred twenty billion, one hundred million, two hundred twenty-two thousand, one hundred two".