2122257672 has 40 divisors (see below), whose sum is σ = 5944288350. Its totient is φ = 707419008.

The previous prime is 2122257667. The next prime is 2122257677. The reversal of 2122257672 is 2767522212.

2122257672 is a `hidden beast` number, since 2 + 12 + 2 + 2 + 576 + 72 = 666.

It is an interprime number because it is at equal distance from previous prime (2122257667) and next prime (2122257677).

It can be written as a sum of positive squares in only one way, i.e., 1886512356 + 235745316 = 43434^2 + 15354^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (2122257677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1636897 + ... + 1638192.

Almost surely, 2^2122257672 is an apocalyptic number.

It is an amenable number.

2122257672 is an abundant number, since it is smaller than the sum of its proper divisors (3822030678).

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

2122257672 is a wasteful number, since it uses less digits than its factorization.

2122257672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3275107 (or 3275094 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 2122257672 is about 46067.9679603952. The cubic root of 2122257672 is about 1285.0875143151.

Adding to 2122257672 its reverse (2767522212), we get a palindrome (4889779884).

The spelling of 2122257672 in words is "two billion, one hundred twenty-two million, two hundred fifty-seven thousand, six hundred seventy-two".