421202222202123 has 12 divisors (see below), whose sum is σ = 628029119843008. Its totient is φ = 271743369162480.

The previous prime is 421202222202101. The next prime is 421202222202131. The reversal of 421202222202123 is 321202222202124.

421202222202123 is a `hidden beast` number, since 4 + 2 + 1 + 2 + 0 + 222 + 220 + 212 + 3 = 666.

It is not a de Polignac number, because 421202222202123 - 2⁸ = 421202222201867 is a prime.

It is a super-2 number, since 2×421202222202123² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421202222202623) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 754842691840 + ... + 754842692397.

Almost surely, 2^{421202222202123} is an apocalyptic number.

421202222202123 is a deficient number, since it is larger than the sum of its proper divisors (206826897640885).

421202222202123 is a wasteful number, since it uses less digits than its factorization.

421202222202123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1509685384274 (or 1509685384271 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 421202222202123 its reverse (321202222202124), we get a palindrome (742404444404247).

Subtracting from 421202222202123 its reverse (321202222202124), we obtain a palindrome (99999999999999).

The spelling of 421202222202123 in words is "four hundred twenty-one trillion, two hundred two billion, two hundred twenty-two million, two hundred two thousand, one hundred twenty-three".