122220423 has 12 divisors (see below), whose sum is σ = 190120840. Its totient is φ = 75212496.

The previous prime is 122220421. The next prime is 122220437. The reversal of 122220423 is 324022221.

122220423 is a `hidden beast` number, since 1 + 22 + 220 + 423 = 666.

It is not a de Polignac number, because 122220423 - 2¹ = 122220421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122220396 and 122220405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122220421) 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, 522193 + ... + 522426.

Almost surely, 2^122220423 is an apocalyptic number.

122220423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

122220423 is a deficient number, since it is larger than the sum of its proper divisors (67900417).

122220423 is a wasteful number, since it uses less digits than its factorization.

122220423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044638 (or 1044635 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 122220423 is about 11055.3345946651. The cubic root of 122220423 is about 496.2660824647.

Adding to 122220423 its reverse (324022221), we get a palindrome (446242644).

The spelling of 122220423 in words is "one hundred twenty-two million, two hundred twenty thousand, four hundred twenty-three".