1200113112021 has 16 divisors (see below), whose sum is σ = 1618941038400. Its totient is φ = 790689308288.

The previous prime is 1200113111999. The next prime is 1200113112041. The reversal of 1200113112021 is 1202113110021.

It is a cyclic number.

It is not a de Polignac number, because 1200113112021 - 2⁷ = 1200113111893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200113112041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 592191 + ... + 1658588.

It is an arithmetic number, because the mean of its divisors is an integer number (101183814900).

Almost surely, 2^{1200113112021} is an apocalyptic number.

It is an amenable number.

1200113112021 is a deficient number, since it is larger than the sum of its proper divisors (418827926379).

1200113112021 is a wasteful number, since it uses less digits than its factorization.

1200113112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2252868.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 1200113112021 its reverse (1202113110021), we get a palindrome (2402226222042).

The spelling of 1200113112021 in words is "one trillion, two hundred billion, one hundred thirteen million, one hundred twelve thousand, twenty-one".