21301311112002 has 24 divisors (see below), whose sum is σ = 48867713728236. Its totient is φ = 6682764270336.

The previous prime is 21301311111989. The next prime is 21301311112009. The reversal of 21301311112002 is 20021111310312.

21301311112002 is a `hidden beast` number, since 21 + 301 + 31 + 111 + 200 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 21297938870961 + 3372241041 = 4614969^2 + 58071^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (21301311112009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34806063603 + ... + 34806064214.

Almost surely, 2^{21301311112002} is an apocalyptic number.

21301311112002 is an abundant number, since it is smaller than the sum of its proper divisors (27566402616234).

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

21301311112002 is a wasteful number, since it uses less digits than its factorization.

21301311112002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69612127842 (or 69612127839 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 21301311112002 its reverse (20021111310312), we get a palindrome (41322422422314).

The spelling of 21301311112002 in words is "twenty-one trillion, three hundred one billion, three hundred eleven million, one hundred twelve thousand, two".