1200022200021 has 64 divisors (see below), whose sum is σ = 1750134931200. Its totient is φ = 728766720000.

The previous prime is 1200022199923. The next prime is 1200022200029.

1200022200021 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1200022200021 - 2¹⁰ = 1200022198997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200022200029) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 121197171 + ... + 121207071.

It is an arithmetic number, because the mean of its divisors is an integer number (27345858300).

Almost surely, 2^{1200022200021} is an apocalyptic number.

It is an amenable number.

1200022200021 is a deficient number, since it is larger than the sum of its proper divisors (550112731179).

1200022200021 is a wasteful number, since it uses less digits than its factorization.

1200022200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10630.

The product of its (nonzero) digits is 32, while the sum is 12.

The spelling of 1200022200021 in words is "one trillion, two hundred billion, twenty-two million, two hundred thousand, twenty-one".