22181971131076 has 27 divisors (see below), whose sum is σ = 40203669294061. Its totient is φ = 10708405913744.

The previous prime is 22181971131053. The next prime is 22181971131209. The reversal of 22181971131076 is 67013117918122.

It is a happy number.

The square root of 22181971131076 is 4709774.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 11631687596676 + 10550283534400 = 3410526^2 + 3248120^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 273126291 + ... + 273207493.

Almost surely, 2^{22181971131076} is an apocalyptic number.

22181971131076 is the 4709774-th square number.

It is an amenable number.

22181971131076 is a deficient number, since it is larger than the sum of its proper divisors (18021698162985).

22181971131076 is an frugal number, since it uses more digits than its factorization.

22181971131076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162468 (or 81234 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 49.

The spelling of 22181971131076 in words is "twenty-two trillion, one hundred eighty-one billion, nine hundred seventy-one million, one hundred thirty-one thousand, seventy-six".