21233001210 has 32 divisors (see below), whose sum is σ = 51148661760. Its totient is φ = 5641082688.

The previous prime is 21233001191. The next prime is 21233001217. The reversal of 21233001210 is 1210033212.

It is a super-2 number, since 2×21233001210² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 21233001210.

It is not an unprimeable number, because it can be changed into a prime (21233001217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1307482 + ... + 1323621.

It is an arithmetic number, because the mean of its divisors is an integer number (1598395680).

Almost surely, 2^21233001210 is an apocalyptic number.

21233001210 is an abundant number, since it is smaller than the sum of its proper divisors (29915660550).

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

21233001210 is a wasteful number, since it uses less digits than its factorization.

21233001210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2631382.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21233001210 its reverse (1210033212), we get a palindrome (22443034422).

The spelling of 21233001210 in words is "twenty-one billion, two hundred thirty-three million, one thousand, two hundred ten".