21111110000202 has 64 divisors (see below), whose sum is σ = 44486989545600. Its totient is φ = 6671691546624.

The previous prime is 21111110000147. The next prime is 21111110000203. The reversal of 21111110000202 is 20200001111112.

It is not an unprimeable number, because it can be changed into a prime (21111110000203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6502327 + ... + 9192522.

It is an arithmetic number, because the mean of its divisors is an integer number (695109211650).

Almost surely, 2^{21111110000202} is an apocalyptic number.

21111110000202 is an abundant number, since it is smaller than the sum of its proper divisors (23375879545398).

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

21111110000202 is a wasteful number, since it uses less digits than its factorization.

21111110000202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15695047.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 21111110000202 its reverse (20200001111112), we get a palindrome (41311111111314).

The spelling of 21111110000202 in words is "twenty-one trillion, one hundred eleven billion, one hundred ten million, two hundred two", and thus it is an aban number.