190012122 has 64 divisors (see below), whose sum is σ = 455414400. Its totient is φ = 58527360.

The previous prime is 190012093. The next prime is 190012129. The reversal of 190012122 is 221210091.

It is a super-2 number, since 2×190012122² = 72209213013885768, which contains 22 as substring.

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 = 190012095 and 190012104.

It is not an unprimeable number, because it can be changed into a prime (190012129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39808 + ... + 44324.

It is an arithmetic number, because the mean of its divisors is an integer number (7115850).

Almost surely, 2^190012122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 190012122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227707200).

190012122 is an abundant number, since it is smaller than the sum of its proper divisors (265402278).

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

190012122 is a wasteful number, since it uses less digits than its factorization.

190012122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4588 (or 4582 counting only the distinct ones).

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

The square root of 190012122 is about 13784.4884562322. The cubic root of 190012122 is about 574.9019336223.

The spelling of 190012122 in words is "one hundred ninety million, twelve thousand, one hundred twenty-two".