21323133102 has 16 divisors (see below), whose sum is σ = 42928693632. Its totient is φ = 7060639800.

The previous prime is 21323133077. The next prime is 21323133103. The reversal of 21323133102 is 20133132312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21323133103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11766828 + ... + 11768639.

It is an arithmetic number, because the mean of its divisors is an integer number (2683043352).

Almost surely, 2^21323133102 is an apocalyptic number.

21323133102 is an abundant number, since it is smaller than the sum of its proper divisors (21605560530).

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

21323133102 is a wasteful number, since it uses less digits than its factorization.

21323133102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23535623.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 21323133102 its reverse (20133132312), we get a palindrome (41456265414).

The spelling of 21323133102 in words is "twenty-one billion, three hundred twenty-three million, one hundred thirty-three thousand, one hundred two".