202211221021 has 8 divisors (see below), whose sum is σ = 206324721504. Its totient is φ = 198108764880.

The previous prime is 202211221007. The next prime is 202211221033. The reversal of 202211221021 is 120122112202.

It is a happy number.

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 202211221021 - 2¹⁵ = 202211188253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202211220986 and 202211221004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202211221081) 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, 2724091 + ... + 2797336.

It is an arithmetic number, because the mean of its divisors is an integer number (25790590188).

Almost surely, 2^202211221021 is an apocalyptic number.

It is an amenable number.

202211221021 is a deficient number, since it is larger than the sum of its proper divisors (4113500483).

202211221021 is an equidigital number, since it uses as much as digits as its factorization.

202211221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5522171.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 202211221021 its reverse (120122112202), we get a palindrome (322333333223).

The spelling of 202211221021 in words is "two hundred two billion, two hundred eleven million, two hundred twenty-one thousand, twenty-one".