21132111002 has 16 divisors (see below), whose sum is σ = 32102908200. Its totient is φ = 10431832320.

The previous prime is 21132110999. The next prime is 21132111023. The reversal of 21132111002 is 20011123112.

It can be written as a sum of positive squares in 4 ways, for example, as 20615503561 + 516607441 = 143581^2 + 22729^2 .

It is a super-2 number, since 2×21132111002² (a number of 21 digits) contains 22 as substring.

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, 111227 + ... + 233742.

Almost surely, 2^21132111002 is an apocalyptic number.

21132111002 is a deficient number, since it is larger than the sum of its proper divisors (10970797198).

21132111002 is a wasteful number, since it uses less digits than its factorization.

21132111002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345361.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 21132111002 its reverse (20011123112), we get a palindrome (41143234114).

The spelling of 21132111002 in words is "twenty-one billion, one hundred thirty-two million, one hundred eleven thousand, two".