11902122 has 36 divisors (see below), whose sum is σ = 26855010. Its totient is φ = 3805200.

The previous prime is 11902087. The next prime is 11902127. The reversal of 11902122 is 22120911.

It can be written as a sum of positive squares in only one way, i.e., 10055241 + 1846881 = 3171^2 + 1359^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 11902095 and 11902104.

It is not an unprimeable number, because it can be changed into a prime (11902127) 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 17 ways as a sum of consecutive naturals, for example, 78747 + ... + 78897.

Almost surely, 2^11902122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11902122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13427505).

11902122 is an abundant number, since it is smaller than the sum of its proper divisors (14952888).

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

11902122 is a wasteful number, since it uses less digits than its factorization.

11902122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339 (or 185 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 11902122 is about 3449.9452169564. The cubic root of 11902122 is about 228.3186909940.

The spelling of 11902122 in words is "eleven million, nine hundred two thousand, one hundred twenty-two".