1200224220021 has 24 divisors (see below), whose sum is σ = 1780573797600. Its totient is φ = 778497150816.

The previous prime is 1200224220011. The next prime is 1200224220023.

1200224220021 is a `hidden beast` number, since 1 + 200 + 2 + 242 + 200 + 21 = 666.

1200224220021 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1200224220021 - 2³⁴ = 1183044350837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1200224219976 and 1200224220003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200224220023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15733830 + ... + 15809928.

It is an arithmetic number, because the mean of its divisors is an integer number (74190574900).

Almost surely, 2^{1200224220021} is an apocalyptic number.

It is an amenable number.

1200224220021 is a deficient number, since it is larger than the sum of its proper divisors (580349577579).

1200224220021 is a wasteful number, since it uses less digits than its factorization.

1200224220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123505 (or 123502 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The spelling of 1200224220021 in words is "one trillion, two hundred billion, two hundred twenty-four million, two hundred twenty thousand, twenty-one".