10202002120 has 64 divisors (see below), whose sum is σ = 24752044800. Its totient is φ = 3771717120.

The previous prime is 10202002117. The next prime is 10202002121. The reversal of 10202002120 is 2120020201.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 10202002097 and 10202002106.

It is not an unprimeable number, because it can be changed into a prime (10202002121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132544 + ... + 194863.

It is an arithmetic number, because the mean of its divisors is an integer number (386750700).

Almost surely, 2^10202002120 is an apocalyptic number.

10202002120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10202002120 is an abundant number, since it is smaller than the sum of its proper divisors (14550042680).

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

10202002120 is a wasteful number, since it uses less digits than its factorization.

10202002120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327478 (or 327474 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 10202002120 its reverse (2120020201), we get a palindrome (12322022321).

The spelling of 10202002120 in words is "ten billion, two hundred two million, two thousand, one hundred twenty".