10012120002 has 12 divisors (see below), whose sum is σ = 21692926710. Its totient is φ = 3337373328.

The previous prime is 10012119989. The next prime is 10012120021. The reversal of 10012120002 is 20002121001.

It can be written as a sum of positive squares in only one way, i.e., 8589397041 + 1422722961 = 92679^2 + 37719^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 278114427 + ... + 278114462.

Almost surely, 2^10012120002 is an apocalyptic number.

10012120002 is an abundant number, since it is smaller than the sum of its proper divisors (11680806708).

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

10012120002 is a wasteful number, since it uses less digits than its factorization.

10012120002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556228897 (or 556228894 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 10012120002 its reverse (20002121001), we get a palindrome (30014241003).

Subtracting 10012120002 from its reverse (20002121001), we obtain a palindrome (9990000999).

The spelling of 10012120002 in words is "ten billion, twelve million, one hundred twenty thousand, two".