10212667620520 has 16 divisors (see below), whose sum is σ = 22978502146260. Its totient is φ = 4085067048192.

The previous prime is 10212667620481. The next prime is 10212667620521. The reversal of 10212667620520 is 2502676621201.

10212667620520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 10212281183556 + 386436964 = 3195666^2 + 19658^2 .

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 255316690513 = 10212667620520 / (1 + 0 + 2 + 1 + 2 + 6 + 6 + 7 + 6 + 2 + 0 + 5 + 2 + 0).

It is not an unprimeable number, because it can be changed into a prime (10212667620521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127658345217 + ... + 127658345296.

Almost surely, 2^{10212667620520} is an apocalyptic number.

10212667620520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10212667620520 is an abundant number, since it is smaller than the sum of its proper divisors (12765834525740).

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

10212667620520 is a wasteful number, since it uses less digits than its factorization.

10212667620520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255316690524 (or 255316690520 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 10212667620520 in words is "ten trillion, two hundred twelve billion, six hundred sixty-seven million, six hundred twenty thousand, five hundred twenty".