202211400421 has 4 divisors (see below), whose sum is σ = 202433367744. Its totient is φ = 201989433100.

The previous prime is 202211400409. The next prime is 202211400427. The reversal of 202211400421 is 124004112202.

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 202211400421 - 2⁹ = 202211399909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202211400427) 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, 110982295 + ... + 110984116.

It is an arithmetic number, because the mean of its divisors is an integer number (50608341936).

Almost surely, 2^202211400421 is an apocalyptic number.

It is an amenable number.

202211400421 is a deficient number, since it is larger than the sum of its proper divisors (221967323).

202211400421 is an equidigital number, since it uses as much as digits as its factorization.

202211400421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221967322.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 202211400421 its reverse (124004112202), we get a palindrome (326215512623).

The spelling of 202211400421 in words is "two hundred two billion, two hundred eleven million, four hundred thousand, four hundred twenty-one".