21312003010220 has 48 divisors (see below), whose sum is σ = 48739464154080. Its totient is φ = 7780630995456.

The previous prime is 21312003010211. The next prime is 21312003010261. The reversal of 21312003010220 is 2201030021312.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 460478222 + ... + 460524501.

It is an arithmetic number, because the mean of its divisors is an integer number (1015405503210).

Almost surely, 2^{21312003010220} is an apocalyptic number.

21312003010220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21312003010220 is an abundant number, since it is smaller than the sum of its proper divisors (27427461143860).

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

21312003010220 is a wasteful number, since it uses less digits than its factorization.

21312003010220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921002834 (or 921002832 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21312003010220 its reverse (2201030021312), we get a palindrome (23513033031532).

The spelling of 21312003010220 in words is "twenty-one trillion, three hundred twelve billion, three million, ten thousand, two hundred twenty".