1200023013021 has 8 divisors (see below), whose sum is σ = 1828606496064. Its totient is φ = 685727436000.

The previous prime is 1200023013011. The next prime is 1200023013023. The reversal of 1200023013021 is 1203103200021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1200023013021 - 2⁹ = 1200023012509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200023013023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28571976480 + ... + 28571976521.

It is an arithmetic number, because the mean of its divisors is an integer number (228575812008).

Almost surely, 2^{1200023013021} is an apocalyptic number.

It is an amenable number.

1200023013021 is a deficient number, since it is larger than the sum of its proper divisors (628583483043).

1200023013021 is an equidigital number, since it uses as much as digits as its factorization.

1200023013021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57143953011.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 1200023013021 its reverse (1203103200021), we get a palindrome (2403126213042).

The spelling of 1200023013021 in words is "one trillion, two hundred billion, twenty-three million, thirteen thousand, twenty-one".