23222220210 has 128 divisors (see below), whose sum is σ = 71029578240. Its totient is φ = 5288654592.

The previous prime is 23222220191. The next prime is 23222220211. The reversal of 23222220210 is 1202222232.

23222220210 is a `hidden beast` number, since 232 + 2 + 2 + 220 + 210 = 666.

It is a super-2 number, since 2×23222220210² (a number of 22 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (23222220211) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 501352 + ... + 545708.

It is an arithmetic number, because the mean of its divisors is an integer number (554918580).

Almost surely, 2^23222220210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23222220210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35514789120).

23222220210 is an abundant number, since it is smaller than the sum of its proper divisors (47807358030).

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

23222220210 is a wasteful number, since it uses less digits than its factorization.

23222220210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44657 (or 44651 counting only the distinct ones).

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

Adding to 23222220210 its reverse (1202222232), we get a palindrome (24424442442).

The spelling of 23222220210 in words is "twenty-three billion, two hundred twenty-two million, two hundred twenty thousand, two hundred ten".