122102811 has 12 divisors (see below), whose sum is σ = 177454888. Its totient is φ = 80901504.

The previous prime is 122102807. The next prime is 122102861. The reversal of 122102811 is 118201221.

It is not a de Polignac number, because 122102811 - 2² = 122102807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122102861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40150 + ... + 43083.

Almost surely, 2^122102811 is an apocalyptic number.

122102811 is a deficient number, since it is larger than the sum of its proper divisors (55352077).

122102811 is a wasteful number, since it uses less digits than its factorization.

122102811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83402 (or 83399 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

The square root of 122102811 is about 11050.0140723892. The cubic root of 122102811 is about 496.1068467247.

The spelling of 122102811 in words is "one hundred twenty-two million, one hundred two thousand, eight hundred eleven".