2111122090 has 96 divisors (see below), whose sum is σ = 4795967232. Its totient is φ = 654931200.

The previous prime is 2111122081. The next prime is 2111122147. The reversal of 2111122090 is 902211112.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2379627 + ... + 2380513.

It is an arithmetic number, because the mean of its divisors is an integer number (49957992).

Almost surely, 2^2111122090 is an apocalyptic number.

2111122090 is an abundant number, since it is smaller than the sum of its proper divisors (2684845142).

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

2111122090 is a wasteful number, since it uses less digits than its factorization.

2111122090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204 (or 1193 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 2111122090 is about 45946.9486473259. The cubic root of 2111122090 is about 1282.8359342252.

It can be divided in two parts, 21 and 11122090, that added together give a palindrome (11122111).

The spelling of 2111122090 in words is "two billion, one hundred eleven million, one hundred twenty-two thousand, ninety".