1012120002 has 32 divisors (see below), whose sum is σ = 2259004800. Its totient is φ = 335895984.

The previous prime is 1012119967. The next prime is 1012120003. The reversal of 1012120002 is 2000212101.

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

It is not an unprimeable number, because it can be changed into a prime (1012120003) 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, 28558 + ... + 53289.

It is an arithmetic number, because the mean of its divisors is an integer number (70593900).

Almost surely, 2^1012120002 is an apocalyptic number.

1012120002 is an abundant number, since it is smaller than the sum of its proper divisors (1246884798).

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

1012120002 is a wasteful number, since it uses less digits than its factorization.

1012120002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82087 (or 82081 counting only the distinct ones).

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

The square root of 1012120002 is about 31813.8335005387. The cubic root of 1012120002 is about 1004.0237880799.

Adding to 1012120002 its reverse (2000212101), we get a palindrome (3012332103).

The spelling of 1012120002 in words is "one billion, twelve million, one hundred twenty thousand, two".