2122119978 has 64 divisors (see below), whose sum is σ = 4962097152. Its totient is φ = 598466880.

The previous prime is 2122119913. The next prime is 2122120031. The reversal of 2122119978 is 8799112212.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37275 + ... + 75057.

It is an arithmetic number, because the mean of its divisors is an integer number (77532768).

Almost surely, 2^2122119978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2122119978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2481048576).

2122119978 is an abundant number, since it is smaller than the sum of its proper divisors (2839977174).

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

2122119978 is a wasteful number, since it uses less digits than its factorization.

2122119978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37859.

The product of its digits is 36288, while the sum is 42.

The square root of 2122119978 is about 46066.4734704101. The cubic root of 2122119978 is about 1285.0597211667.

The spelling of 2122119978 in words is "two billion, one hundred twenty-two million, one hundred nineteen thousand, nine hundred seventy-eight".