1200121211012 has 24 divisors (see below), whose sum is σ = 2170193824512. Its totient is φ = 580105706400.

The previous prime is 1200121210999. The next prime is 1200121211039. The reversal of 1200121211012 is 2101121210021.

It is a super-2 number, since 2×1200121211012² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4863323 + ... + 5104130.

It is an arithmetic number, because the mean of its divisors is an integer number (90424742688).

Almost surely, 2^{1200121211012} is an apocalyptic number.

It is an amenable number.

1200121211012 is a deficient number, since it is larger than the sum of its proper divisors (970072613500).

1200121211012 is a wasteful number, since it uses less digits than its factorization.

1200121211012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9968459 (or 9968457 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1200121211012 its reverse (2101121210021), we get a palindrome (3301242421033).

Subtracting 1200121211012 from its reverse (2101121210021), we obtain a palindrome (900999999009).

The spelling of 1200121211012 in words is "one trillion, two hundred billion, one hundred twenty-one million, two hundred eleven thousand, twelve".