2091122254 has 16 divisors (see below), whose sum is σ = 3555755280. Its totient is φ = 914336640.

The previous prime is 2091122251. The next prime is 2091122279. The reversal of 2091122254 is 4522211902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2091122251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2116027 + ... + 2117014.

It is an arithmetic number, because the mean of its divisors is an integer number (222234705).

Almost surely, 2^2091122254 is an apocalyptic number.

2091122254 is a deficient number, since it is larger than the sum of its proper divisors (1464633026).

2091122254 is a wasteful number, since it uses less digits than its factorization.

2091122254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4233075.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 2091122254 is about 45728.7902092325. The cubic root of 2091122254 is about 1278.7720674294.

The spelling of 2091122254 in words is "two billion, ninety-one million, one hundred twenty-two thousand, two hundred fifty-four".