420023222121 has 8 divisors (see below), whose sum is σ = 560037234240. Its totient is φ = 280012345712.

The previous prime is 420023222089. The next prime is 420023222131. The reversal of 420023222121 is 121222320024.

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 420023222121 - 2⁵ = 420023222089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420023222131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 451206 + ... + 1021583.

It is an arithmetic number, because the mean of its divisors is an integer number (70004654280).

Almost surely, 2^420023222121 is an apocalyptic number.

It is an amenable number.

420023222121 is a deficient number, since it is larger than the sum of its proper divisors (140014012119).

420023222121 is a wasteful number, since it uses less digits than its factorization.

420023222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1567855.

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

Adding to 420023222121 its reverse (121222320024), we get a palindrome (541245542145).

The spelling of 420023222121 in words is "four hundred twenty billion, twenty-three million, two hundred twenty-two thousand, one hundred twenty-one".