2891122102 has 32 divisors (see below), whose sum is σ = 5065558560. Its totient is φ = 1222932480.

The previous prime is 2891122081. The next prime is 2891122109. The reversal of 2891122102 is 2012211982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2891122109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10143 + ... + 76714.

It is an arithmetic number, because the mean of its divisors is an integer number (158298705).

Almost surely, 2^2891122102 is an apocalyptic number.

2891122102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2891122102 is a deficient number, since it is larger than the sum of its proper divisors (2174436458).

2891122102 is a wasteful number, since it uses less digits than its factorization.

2891122102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86976.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 2891122102 is about 53769.1556749778. The cubic root of 2891122102 is about 1424.5864567097.

The spelling of 2891122102 in words is "two billion, eight hundred ninety-one million, one hundred twenty-two thousand, one hundred two".