20122320421 has 8 divisors (see below), whose sum is σ = 23123993984. Its totient is φ = 17152410960.

The previous prime is 20122320397. The next prime is 20122320457. The reversal of 20122320421 is 12402322102.

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 20122320421 - 2²¹ = 20120223269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122320121) 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, 7939665 + ... + 7942198.

It is an arithmetic number, because the mean of its divisors is an integer number (2890499248).

Almost surely, 2^20122320421 is an apocalyptic number.

It is an amenable number.

20122320421 is a deficient number, since it is larger than the sum of its proper divisors (3001673563).

20122320421 is a wasteful number, since it uses less digits than its factorization.

20122320421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15882051.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20122320421 its reverse (12402322102), we get a palindrome (32524642523).

The spelling of 20122320421 in words is "twenty billion, one hundred twenty-two million, three hundred twenty thousand, four hundred twenty-one".