21213101032 has 32 divisors (see below), whose sum is σ = 39924313920. Its totient is φ = 10566673920.

The previous prime is 21213101009. The next prime is 21213101053. The reversal of 21213101032 is 23010131212.

It is a junction number, because it is equal to n+sod(n) for n = 21213100997 and 21213101015.

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, 4014232 + ... + 4019512.

It is an arithmetic number, because the mean of its divisors is an integer number (1247634810).

Almost surely, 2^21213101032 is an apocalyptic number.

It is an amenable number.

21213101032 is a deficient number, since it is larger than the sum of its proper divisors (18711212888).

21213101032 is a wasteful number, since it uses less digits than its factorization.

21213101032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7081 (or 7077 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21213101032 its reverse (23010131212), we get a palindrome (44223232244).

The spelling of 21213101032 in words is "twenty-one billion, two hundred thirteen million, one hundred one thousand, thirty-two".