121201000002 has 20 divisors (see below), whose sum is σ = 271580018886. Its totient is φ = 40400333280.

The previous prime is 121200999961. The next prime is 121201000033. The reversal of 121201000002 is 200000102121.

It can be written as a sum of positive squares in only one way, i.e., 109461060801 + 11739939201 = 330849^2 + 108351^2 .

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 9 ways as a sum of consecutive naturals, for example, 374076999 + ... + 374077322.

Almost surely, 2^121201000002 is an apocalyptic number.

121201000002 is an abundant number, since it is smaller than the sum of its proper divisors (150379018884).

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

121201000002 is an equidigital number, since it uses as much as digits as its factorization.

121201000002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748154335 (or 748154326 counting only the distinct ones).

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

Adding to 121201000002 its reverse (200000102121), we get a palindrome (321201102123).

The spelling of 121201000002 in words is "one hundred twenty-one billion, two hundred one million, two", and thus it is an aban number.