1202220200021 has 4 divisors (see below), whose sum is σ = 1203463448352. Its totient is φ = 1200976951692.

The previous prime is 1202220199931. The next prime is 1202220200033. The reversal of 1202220200021 is 1200020222021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1202220200021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1202220199969 and 1202220200005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202220200081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 621622715 + ... + 621624648.

It is an arithmetic number, because the mean of its divisors is an integer number (300865862088).

Almost surely, 2^{1202220200021} is an apocalyptic number.

It is an amenable number.

1202220200021 is a deficient number, since it is larger than the sum of its proper divisors (1243248331).

1202220200021 is an equidigital number, since it uses as much as digits as its factorization.

1202220200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243248330.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 1202220200021 its reverse (1200020222021), we get a palindrome (2402240422042).

The spelling of 1202220200021 in words is "one trillion, two hundred two billion, two hundred twenty million, two hundred thousand, twenty-one".