1201200121002 has 64 divisors (see below), whose sum is σ = 2753766512640. Its totient is φ = 342180783936.

The previous prime is 1201200120959. The next prime is 1201200121109. The reversal of 1201200121002 is 2001210021021.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19235193 + ... + 19297539.

It is an arithmetic number, because the mean of its divisors is an integer number (43027601760).

Almost surely, 2^{1201200121002} is an apocalyptic number.

1201200121002 is an abundant number, since it is smaller than the sum of its proper divisors (1552566391638).

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

1201200121002 is a wasteful number, since it uses less digits than its factorization.

1201200121002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63715.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1201200121002 its reverse (2001210021021), we get a palindrome (3202410142023).

The spelling of 1201200121002 in words is "one trillion, two hundred one billion, two hundred million, one hundred twenty-one thousand, two".