21113120002 has 16 divisors (see below), whose sum is σ = 34111949760. Its totient is φ = 9742762512.

The previous prime is 21113119939. The next prime is 21113120057. The reversal of 21113120002 is 20002131112.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80149 + ... + 220567.

It is an arithmetic number, because the mean of its divisors is an integer number (2131996860).

Almost surely, 2^21113120002 is an apocalyptic number.

21113120002 is a deficient number, since it is larger than the sum of its proper divisors (12998829758).

21113120002 is a wasteful number, since it uses less digits than its factorization.

21113120002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146217.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 21113120002 its reverse (20002131112), we get a palindrome (41115251114).

The spelling of 21113120002 in words is "twenty-one billion, one hundred thirteen million, one hundred twenty thousand, two".