10120002000 has 80 divisors (see below), whose sum is σ = 32626905792. Its totient is φ = 2698665600.

The previous prime is 10120001993. The next prime is 10120002007. The reversal of 10120002000 is 20002101.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (10120001993) and next prime (10120002007).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a self number, because there is not a number n which added to its sum of digits gives 10120002000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10120002007) 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, 837334 + ... + 849333.

Almost surely, 2^10120002000 is an apocalyptic number.

10120002000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10120002000 is an abundant number, since it is smaller than the sum of its proper divisors (22506903792).

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

10120002000 is a wasteful number, since it uses less digits than its factorization.

10120002000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686693 (or 1686677 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 6.

Adding to 10120002000 its reverse (20002101), we get a palindrome (10140004101).

The spelling of 10120002000 in words is "ten billion, one hundred twenty million, two thousand".