2122646772 has 12 divisors (see below), whose sum is σ = 4952842496. Its totient is φ = 707548920.

The previous prime is 2122646761. The next prime is 2122646777. The reversal of 2122646772 is 2776462212.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 2122646772.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122646777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88443604 + ... + 88443627.

Almost surely, 2^2122646772 is an apocalyptic number.

It is an amenable number.

2122646772 is an abundant number, since it is smaller than the sum of its proper divisors (2830195724).

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

2122646772 is a wasteful number, since it uses less digits than its factorization.

2122646772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176887238 (or 176887236 counting only the distinct ones).

The product of its digits is 112896, while the sum is 39.

The square root of 2122646772 is about 46072.1908747565. The cubic root of 2122646772 is about 1285.1660465629.

The spelling of 2122646772 in words is "two billion, one hundred twenty-two million, six hundred forty-six thousand, seven hundred seventy-two".