21032331330 has 64 divisors (see below), whose sum is σ = 50817818880. Its totient is φ = 5570912256.

The previous prime is 21032331323. The next prime is 21032331343. The reversal of 21032331330 is 3313323012.

It is a super-2 number, since 2×21032331330² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21032331297 and 21032331306.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4299526 + ... + 4304414.

It is an arithmetic number, because the mean of its divisors is an integer number (794028420).

Almost surely, 2^21032331330 is an apocalyptic number.

21032331330 is an abundant number, since it is smaller than the sum of its proper divisors (29785487550).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21032331330 is a wasteful number, since it uses less digits than its factorization.

21032331330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5835.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 21032331330 its reverse (3313323012), we get a palindrome (24345654342).

The spelling of 21032331330 in words is "twenty-one billion, thirty-two million, three hundred thirty-one thousand, three hundred thirty".