2100012122 has 8 divisors (see below), whose sum is σ = 3392327316. Its totient is φ = 969236352.

The previous prime is 2100012121. The next prime is 2100012127. The reversal of 2100012122 is 2212100012.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2089312681 + 10699441 = 45709^2 + 3271^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2100012121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40384823 + ... + 40384874.

Almost surely, 2^2100012122 is an apocalyptic number.

2100012122 is a deficient number, since it is larger than the sum of its proper divisors (1292315194).

2100012122 is a wasteful number, since it uses less digits than its factorization.

2100012122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80769712.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2100012122 is about 45825.8892112308. The cubic root of 2100012122 is about 1280.5816289797.

Adding to 2100012122 its reverse (2212100012), we get a palindrome (4312112134).

The spelling of 2100012122 in words is "two billion, one hundred million, twelve thousand, one hundred twenty-two".