1200102001002 has 12 divisors (see below), whose sum is σ = 2600221002210. Its totient is φ = 400034000328.

The previous prime is 1200102000961. The next prime is 1200102001013. The reversal of 1200102001002 is 2001002010021.

It can be written as a sum of positive squares in only one way, i.e., 1190806920081 + 9295080921 = 1091241^2 + 96411^2 .

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, 33336166677 + ... + 33336166712.

Almost surely, 2^{1200102001002} is an apocalyptic number.

1200102001002 is an abundant number, since it is smaller than the sum of its proper divisors (1400119001208).

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

1200102001002 is a wasteful number, since it uses less digits than its factorization.

1200102001002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66672333397 (or 66672333394 counting only the distinct ones).

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

Adding to 1200102001002 its reverse (2001002010021), we get a palindrome (3201104011023).

The spelling of 1200102001002 in words is "one trillion, two hundred billion, one hundred two million, one thousand, two".