10220512420 has 12 divisors (see below), whose sum is σ = 21463076124. Its totient is φ = 4088204960.

The previous prime is 10220512399. The next prime is 10220512447. The reversal of 10220512420 is 2421502201.

It can be written as a sum of positive squares in 2 ways, for example, as 5204756736 + 5015755684 = 72144^2 + 70822^2 .

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, 255512791 + ... + 255512830.

It is an arithmetic number, because the mean of its divisors is an integer number (1788589677).

Almost surely, 2^10220512420 is an apocalyptic number.

10220512420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10220512420 is an abundant number, since it is smaller than the sum of its proper divisors (11242563704).

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

10220512420 is a wasteful number, since it uses less digits than its factorization.

10220512420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511025630 (or 511025628 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The spelling of 10220512420 in words is "ten billion, two hundred twenty million, five hundred twelve thousand, four hundred twenty".