420122221023 has 4 divisors (see below), whose sum is σ = 560162961368. Its totient is φ = 280081480680.

The previous prime is 420122221021. The next prime is 420122221109. The reversal of 420122221023 is 320122221024.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 420122221023 - 2¹ = 420122221021 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 (420122221021) 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, 70020370168 + ... + 70020370173.

It is an arithmetic number, because the mean of its divisors is an integer number (140040740342).

Almost surely, 2^420122221023 is an apocalyptic number.

420122221023 is a deficient number, since it is larger than the sum of its proper divisors (140040740345).

420122221023 is a wasteful number, since it uses less digits than its factorization.

420122221023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140040740344.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 420122221023 its reverse (320122221024), we get a palindrome (740244442047).

Subtracting from 420122221023 its reverse (320122221024), we obtain a palindrome (99999999999).

The spelling of 420122221023 in words is "four hundred twenty billion, one hundred twenty-two million, two hundred twenty-one thousand, twenty-three".