202221421031 has 8 divisors (see below), whose sum is σ = 241158465024. Its totient is φ = 165796444440.

The previous prime is 202221421027. The next prime is 202221421049. The reversal of 202221421031 is 130124122202.

202221421031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 202221421031 - 2² = 202221421027 is a prime.

It is a super-2 number, since 2×202221421031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202221420994 and 202221421012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202221421331) 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 7 ways as a sum of consecutive naturals, for example, 628016675 + ... + 628016996.

It is an arithmetic number, because the mean of its divisors is an integer number (30144808128).

Almost surely, 2^202221421031 is an apocalyptic number.

202221421031 is a deficient number, since it is larger than the sum of its proper divisors (38937043993).

202221421031 is a wasteful number, since it uses less digits than its factorization.

202221421031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1256033701.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 202221421031 its reverse (130124122202), we get a palindrome (332345543233).

The spelling of 202221421031 in words is "two hundred two billion, two hundred twenty-one million, four hundred twenty-one thousand, thirty-one".