22421520123 has 8 divisors (see below), whose sum is σ = 31195158528. Its totient is φ = 14297780904.

The previous prime is 22421520113. The next prime is 22421520137. The reversal of 22421520123 is 32102512422.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22421520123 - 2⁵ = 22421520091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22421520093 and 22421520102.

It is not an unprimeable number, because it can be changed into a prime (22421520113) 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, 162474715 + ... + 162474852.

It is an arithmetic number, because the mean of its divisors is an integer number (3899394816).

Almost surely, 2^22421520123 is an apocalyptic number.

22421520123 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

22421520123 is a deficient number, since it is larger than the sum of its proper divisors (8773638405).

22421520123 is a wasteful number, since it uses less digits than its factorization.

22421520123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324949593.

The product of its (nonzero) digits is 1920, while the sum is 24.

The spelling of 22421520123 in words is "twenty-two billion, four hundred twenty-one million, five hundred twenty thousand, one hundred twenty-three".