2100121101222 has 64 divisors (see below), whose sum is σ = 4696634638080. Its totient is φ = 622151248896.

The previous prime is 2100121101181. The next prime is 2100121101229. The reversal of 2100121101222 is 2221011210012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100121101229) 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, 1169943 + ... + 2359874.

It is an arithmetic number, because the mean of its divisors is an integer number (73384916220).

Almost surely, 2^{2100121101222} is an apocalyptic number.

2100121101222 is an abundant number, since it is smaller than the sum of its proper divisors (2596513536858).

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

2100121101222 is a wasteful number, since it uses less digits than its factorization.

2100121101222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3530165.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2100121101222 its reverse (2221011210012), we get a palindrome (4321132311234).

The spelling of 2100121101222 in words is "two trillion, one hundred billion, one hundred twenty-one million, one hundred one thousand, two hundred twenty-two".