23142221000 has 64 divisors (see below), whose sum is σ = 54227422080. Its totient is φ = 9244132800.

The previous prime is 23142220993. The next prime is 23142221017. The reversal of 23142221000 is 12224132.

It is a self number, because there is not a number n which added to its sum of digits gives 23142221000.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 727427 + ... + 758573.

It is an arithmetic number, because the mean of its divisors is an integer number (847303470).

Almost surely, 2^23142221000 is an apocalyptic number.

23142221000 is a gapful number since it is divisible by the number (20) 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 23142221000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27113711040).

23142221000 is an abundant number, since it is smaller than the sum of its proper divisors (31085201080).

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

23142221000 is a wasteful number, since it uses less digits than its factorization.

23142221000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31911 (or 31897 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 23142221000 its reverse (12224132), we get a palindrome (23154445132).

The spelling of 23142221000 in words is "twenty-three billion, one hundred forty-two million, two hundred twenty-one thousand".