21132315554402 has 32 divisors (see below), whose sum is σ = 34284575119872. Its totient is φ = 9711227769984.

The previous prime is 21132315554387. The next prime is 21132315554423. The reversal of 21132315554402 is 20445551323112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6066383 + ... + 8891885.

It is an arithmetic number, because the mean of its divisors is an integer number (1071392972496).

Almost surely, 2^{21132315554402} is an apocalyptic number.

21132315554402 is a deficient number, since it is larger than the sum of its proper divisors (13152259565470).

21132315554402 is a wasteful number, since it uses less digits than its factorization.

21132315554402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2826762.

The product of its (nonzero) digits is 144000, while the sum is 38.

Adding to 21132315554402 its reverse (20445551323112), we get a palindrome (41577866877514).

The spelling of 21132315554402 in words is "twenty-one trillion, one hundred thirty-two billion, three hundred fifteen million, five hundred fifty-four thousand, four hundred two".