22023123012 has 72 divisors (see below), whose sum is σ = 60831144192. Its totient is φ = 6662606400.

The previous prime is 22023123007. The next prime is 22023123029. The reversal of 22023123012 is 21032132022.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 194562 + ... + 286182.

Almost surely, 2^22023123012 is an apocalyptic number.

22023123012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22023123012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30415572096).

22023123012 is an abundant number, since it is smaller than the sum of its proper divisors (38808021180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22023123012 is a wasteful number, since it uses less digits than its factorization.

22023123012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92249 (or 92244 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 22023123012 its reverse (21032132022), we get a palindrome (43055255034).

The spelling of 22023123012 in words is "twenty-two billion, twenty-three million, one hundred twenty-three thousand, twelve".