10020120320 has 72 divisors (see below), whose sum is σ = 27430103904. Its totient is φ = 3435466752.

The previous prime is 10020120317. The next prime is 10020120323. The reversal of 10020120320 is 2302102001.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (10020120317) and next prime (10020120323).

It is a super-2 number, since 2×10020120320² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10020120323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 550199 + ... + 568118.

Almost surely, 2^10020120320 is an apocalyptic number.

10020120320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10020120320 is an abundant number, since it is smaller than the sum of its proper divisors (17409983584).

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

10020120320 is an equidigital number, since it uses as much as digits as its factorization.

10020120320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118345 (or 1118331 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 10020120320 its reverse (2302102001), we get a palindrome (12322222321).

The spelling of 10020120320 in words is "ten billion, twenty million, one hundred twenty thousand, three hundred twenty".