202120104421 has 8 divisors (see below), whose sum is σ = 210959562240. Its totient is φ = 193284948912.

The previous prime is 202120104397. The next prime is 202120104517. The reversal of 202120104421 is 124401021202.

202120104421 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 202120104421 - 2¹⁵ = 202120071653 is a prime.

It is a super-2 number, since 2×202120104421² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202120104821) 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, 979381 + ... + 1167658.

It is an arithmetic number, because the mean of its divisors is an integer number (26369945280).

Almost surely, 2^202120104421 is an apocalyptic number.

It is an amenable number.

202120104421 is a deficient number, since it is larger than the sum of its proper divisors (8839457819).

202120104421 is a wasteful number, since it uses less digits than its factorization.

202120104421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2151155.

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

Adding to 202120104421 its reverse (124401021202), we get a palindrome (326521125623).

The spelling of 202120104421 in words is "two hundred two billion, one hundred twenty million, one hundred four thousand, four hundred twenty-one".