21213602033488 has 40 divisors (see below), whose sum is σ = 41501180716736. Its totient is φ = 10503623808000.

The previous prime is 21213602033381. The next prime is 21213602033489. The reversal of 21213602033488 is 88433020631212.

It is a super-2 number, since 2×21213602033488² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21213602033489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128017888 + ... + 128183488.

Almost surely, 2^{21213602033488} is an apocalyptic number.

It is an amenable number.

21213602033488 is a deficient number, since it is larger than the sum of its proper divisors (20287578683248).

21213602033488 is a wasteful number, since it uses less digits than its factorization.

21213602033488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243443 (or 243437 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 43.

The spelling of 21213602033488 in words is "twenty-one trillion, two hundred thirteen billion, six hundred two million, thirty-three thousand, four hundred eighty-eight".