1202200021021 has 4 divisors (see below), whose sum is σ = 1204609240000. Its totient is φ = 1199790802044.

The previous prime is 1202200020943. The next prime is 1202200021027. The reversal of 1202200021021 is 1201200022021.

It is a happy number.

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 not a de Polignac number, because 1202200021021 - 2²⁷ = 1202065803293 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1202200020992 and 1202200021010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202200021027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1204608741 + ... + 1204609738.

It is an arithmetic number, because the mean of its divisors is an integer number (301152310000).

Almost surely, 2^{1202200021021} is an apocalyptic number.

It is an amenable number.

1202200021021 is a deficient number, since it is larger than the sum of its proper divisors (2409218979).

1202200021021 is an equidigital number, since it uses as much as digits as its factorization.

1202200021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2409218978.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1202200021021 its reverse (1201200022021), we get a palindrome (2403400043042).

The spelling of 1202200021021 in words is "one trillion, two hundred two billion, two hundred million, twenty-one thousand, twenty-one".