2122780884 has 48 divisors (see below), whose sum is σ = 5667828096. Its totient is φ = 605750400.

The previous prime is 2122780873. The next prime is 2122780901. The reversal of 2122780884 is 4880872212.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53574 + ... + 84354.

It is an arithmetic number, because the mean of its divisors is an integer number (118079752).

Almost surely, 2^2122780884 is an apocalyptic number.

It is an amenable number.

2122780884 is an abundant number, since it is smaller than the sum of its proper divisors (3545047212).

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

2122780884 is a wasteful number, since it uses less digits than its factorization.

2122780884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31616 (or 31614 counting only the distinct ones).

The product of its (nonzero) digits is 114688, while the sum is 42.

The square root of 2122780884 is about 46073.6463067554. The cubic root of 2122780884 is about 1285.1931122310.

The spelling of 2122780884 in words is "two billion, one hundred twenty-two million, seven hundred eighty thousand, eight hundred eighty-four".