2100121221122 has 8 divisors (see below), whose sum is σ = 3150192375036. Its totient is φ = 1050057096112.

The previous prime is 2100121221113. The next prime is 2100121221127. The reversal of 2100121221122 is 2211221210012.

It can be written as a sum of positive squares in 2 ways, for example, as 1839438475081 + 260682746041 = 1356259^2 + 510571^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 2100121221122.

It is not an unprimeable number, because it can be changed into a prime (2100121221127) 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, 932933 + ... + 2251800.

Almost surely, 2^{2100121221122} is an apocalyptic number.

2100121221122 is a deficient number, since it is larger than the sum of its proper divisors (1050071153914).

2100121221122 is a wasteful number, since it uses less digits than its factorization.

2100121221122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3514452.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2100121221122 its reverse (2211221210012), we get a palindrome (4311342431134).

The spelling of 2100121221122 in words is "two trillion, one hundred billion, one hundred twenty-one million, two hundred twenty-one thousand, one hundred twenty-two".