10520512220 has 48 divisors (see below), whose sum is σ = 23563522080. Its totient is φ = 3931736064.

The previous prime is 10520512217. The next prime is 10520512273. The reversal of 10520512220 is 2221502501.

It is a happy number.

It is a super-2 number, since 2×10520512220² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 10520512192 and 10520512201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66350 + ... + 159509.

It is an arithmetic number, because the mean of its divisors is an integer number (490906710).

Almost surely, 2^10520512220 is an apocalyptic number.

10520512220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10520512220 is an abundant number, since it is smaller than the sum of its proper divisors (13043009860).

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

10520512220 is a wasteful number, since it uses less digits than its factorization.

10520512220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226022 (or 226020 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The spelling of 10520512220 in words is "ten billion, five hundred twenty million, five hundred twelve thousand, two hundred twenty".