1300021002 has 80 divisors (see below), whose sum is σ = 3504431040. Its totient is φ = 351879552.

The previous prime is 1300021001. The next prime is 1300021013. The reversal of 1300021002 is 2001200031.

It is a happy number.

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 (1300021001) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 8623 + ... + 51714.

It is an arithmetic number, because the mean of its divisors is an integer number (43805388).

Almost surely, 2^1300021002 is an apocalyptic number.

1300021002 is an abundant number, since it is smaller than the sum of its proper divisors (2204410038).

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

1300021002 is a wasteful number, since it uses less digits than its factorization.

1300021002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60377 (or 60368 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 1300021002 is about 36055.8039988016. The cubic root of 1300021002 is about 1091.3987603201.

Adding to 1300021002 its reverse (2001200031), we get a palindrome (3301221033).

The spelling of 1300021002 in words is "one billion, three hundred million, twenty-one thousand, two".