21101111302002 has 32 divisors (see below), whose sum is σ = 43578258577920. Its totient is φ = 6804517292160.

The previous prime is 21101111301997. The next prime is 21101111302013. The reversal of 21101111302002 is 20020311110112.

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, 18552993 + ... + 19657460.

It is an arithmetic number, because the mean of its divisors is an integer number (1361820580560).

Almost surely, 2^{21101111302002} is an apocalyptic number.

21101111302002 is an abundant number, since it is smaller than the sum of its proper divisors (22477147275918).

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

21101111302002 is a wasteful number, since it uses less digits than its factorization.

21101111302002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38213458.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 21101111302002 its reverse (20020311110112), we get a palindrome (41121422412114).

The spelling of 21101111302002 in words is "twenty-one trillion, one hundred one billion, one hundred eleven million, three hundred two thousand, two".