1200122213021 has 8 divisors (see below), whose sum is σ = 1205011699584. Its totient is φ = 1195236116640.

The previous prime is 1200122213011. The next prime is 1200122213033. The reversal of 1200122213021 is 1203122210021.

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

It is a cyclic number.

It is not a de Polignac number, because 1200122213021 - 2¹⁸ = 1200121950877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200122213011) 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, 136895 + ... + 1555308.

It is an arithmetic number, because the mean of its divisors is an integer number (150626462448).

Almost surely, 2^{1200122213021} is an apocalyptic number.

It is an amenable number.

1200122213021 is a deficient number, since it is larger than the sum of its proper divisors (4889486563).

1200122213021 is a wasteful number, since it uses less digits than its factorization.

1200122213021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1695091.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1200122213021 its reverse (1203122210021), we get a palindrome (2403244423042).

The spelling of 1200122213021 in words is "one trillion, two hundred billion, one hundred twenty-two million, two hundred thirteen thousand, twenty-one".