202120333421 has 8 divisors (see below), whose sum is σ = 203977073664. Its totient is φ = 200264787520.

The previous prime is 202120333411. The next prime is 202120333427. The reversal of 202120333421 is 124333021202.

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 202120333421 - 2¹⁸ = 202120071277 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 (202120333427) 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, 43220 + ... + 637266.

It is an arithmetic number, because the mean of its divisors is an integer number (25497134208).

Almost surely, 2^202120333421 is an apocalyptic number.

It is an amenable number.

202120333421 is a deficient number, since it is larger than the sum of its proper divisors (1856740243).

202120333421 is a wasteful number, since it uses less digits than its factorization.

202120333421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597171.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 202120333421 its reverse (124333021202), we get a palindrome (326453354623).

The spelling of 202120333421 in words is "two hundred two billion, one hundred twenty million, three hundred thirty-three thousand, four hundred twenty-one".