2129122 has 8 divisors (see below), whose sum is σ = 3303900. Its totient is φ = 1027824.

The previous prime is 2129119. The next prime is 2129123. The reversal of 2129122 is 2219212.

It can be written as a sum of positive squares in 2 ways, for example, as 2128681 + 441 = 1459^2 + 21^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-4 number, since 4×2129122⁴ (a number of 26 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2129122.

It is not an unprimeable number, because it can be changed into a prime (2129123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18297 + ... + 18412.

2^2129122 is an apocalyptic number.

2129122 is a deficient number, since it is larger than the sum of its proper divisors (1174778).

2129122 is a wasteful number, since it uses less digits than its factorization.

2129122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36740.

The product of its digits is 144, while the sum is 19.

The square root of 2129122 is about 1459.1511230849. The cubic root of 2129122 is about 128.6471538625.

The spelling of 2129122 in words is "two million, one hundred twenty-nine thousand, one hundred twenty-two".