21132420302 has 32 divisors (see below), whose sum is σ = 36388954560. Its totient is φ = 9016323840.

The previous prime is 21132420301. The next prime is 21132420311. The reversal of 21132420302 is 20302423112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21132420301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8844524 + ... + 8846912.

It is an arithmetic number, because the mean of its divisors is an integer number (1137154830).

Almost surely, 2^21132420302 is an apocalyptic number.

21132420302 is a deficient number, since it is larger than the sum of its proper divisors (15256534258).

21132420302 is a wasteful number, since it uses less digits than its factorization.

21132420302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4956.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21132420302 its reverse (20302423112), we get a palindrome (41434843414).

The spelling of 21132420302 in words is "twenty-one billion, one hundred thirty-two million, four hundred twenty thousand, three hundred two".