22154222352 has 40 divisors (see below), whose sum is σ = 57271691520. Its totient is φ = 7379585920.

The previous prime is 22154222327. The next prime is 22154222359. The reversal of 22154222352 is 25322245122.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22154222359) 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, 91299 + ... + 229442.

It is an arithmetic number, because the mean of its divisors is an integer number (1431792288).

Almost surely, 2^22154222352 is an apocalyptic number.

It is an amenable number.

22154222352 is an abundant number, since it is smaller than the sum of its proper divisors (35117469168).

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

22154222352 is a wasteful number, since it uses less digits than its factorization.

22154222352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322191 (or 322185 counting only the distinct ones).

The product of its digits is 19200, while the sum is 30.

Adding to 22154222352 its reverse (25322245122), we get a palindrome (47476467474).

The spelling of 22154222352 in words is "twenty-two billion, one hundred fifty-four million, two hundred twenty-two thousand, three hundred fifty-two".