22155221070 has 48 divisors (see below), whose sum is σ = 57614789232. Its totient is φ = 5906908800.

The previous prime is 22155221059. The next prime is 22155221071. The reversal of 22155221070 is 7012255122.

22155221070 is a `hidden beast` number, since 2 + 2 + 1 + 552 + 2 + 107 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22155221071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 505554 + ... + 547626.

It is an arithmetic number, because the mean of its divisors is an integer number (1200308109).

Almost surely, 2^22155221070 is an apocalyptic number.

22155221070 is an abundant number, since it is smaller than the sum of its proper divisors (35459568162).

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

22155221070 is a wasteful number, since it uses less digits than its factorization.

22155221070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47937 (or 47934 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

Adding to 22155221070 its reverse (7012255122), we get a palindrome (29167476192).

The spelling of 22155221070 in words is "twenty-two billion, one hundred fifty-five million, two hundred twenty-one thousand, seventy".