21232212332 has 12 divisors (see below), whose sum is σ = 37378866000. Its totient is φ = 10552536336.

The previous prime is 21232212329. The next prime is 21232212343. The reversal of 21232212332 is 23321223212.

It is a super-2 number, since 2×21232212332² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21232212298 and 21232212307.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15891707 + ... + 15893042.

It is an arithmetic number, because the mean of its divisors is an integer number (3114905500).

Almost surely, 2^21232212332 is an apocalyptic number.

It is an amenable number.

21232212332 is a deficient number, since it is larger than the sum of its proper divisors (16146653668).

21232212332 is a wasteful number, since it uses less digits than its factorization.

21232212332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31784920 (or 31784918 counting only the distinct ones).

The product of its digits is 1728, while the sum is 23.

Adding to 21232212332 its reverse (23321223212), we get a palindrome (44553435544).

The spelling of 21232212332 in words is "twenty-one billion, two hundred thirty-two million, two hundred twelve thousand, three hundred thirty-two".