2162655221 has 16 divisors (see below), whose sum is σ = 2439460800. Its totient is φ = 1905055488.

The previous prime is 2162655203. The next prime is 2162655223. The reversal of 2162655221 is 1225562612.

It is a cyclic number.

It is not a de Polignac number, because 2162655221 - 2²² = 2158460917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2162655223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13526 + ... + 67143.

It is an arithmetic number, because the mean of its divisors is an integer number (152466300).

Almost surely, 2^2162655221 is an apocalyptic number.

It is an amenable number.

2162655221 is a deficient number, since it is larger than the sum of its proper divisors (276805579).

2162655221 is a wasteful number, since it uses less digits than its factorization.

2162655221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80788.

The product of its digits is 14400, while the sum is 32.

The square root of 2162655221 is about 46504.3570109296. The cubic root of 2162655221 is about 1293.1902730766.

The spelling of 2162655221 in words is "two billion, one hundred sixty-two million, six hundred fifty-five thousand, two hundred twenty-one".