2100121121122 has 8 divisors (see below), whose sum is σ = 3153150753372. Its totient is φ = 1049070870000.

The previous prime is 2100121121107. The next prime is 2100121121179. The reversal of 2100121121122 is 2211211210012.

It can be written as a sum of positive squares in 2 ways, for example, as 2097656892241 + 2464228881 = 1448329^2 + 49641^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 2100121121096 and 2100121121105.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 494842629 + ... + 494846872.

Almost surely, 2^{2100121121122} is an apocalyptic number.

2100121121122 is a deficient number, since it is larger than the sum of its proper divisors (1053029632250).

2100121121122 is a wasteful number, since it uses less digits than its factorization.

2100121121122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989690564.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2100121121122 its reverse (2211211210012), we get a palindrome (4311332331134).

The spelling of 2100121121122 in words is "two trillion, one hundred billion, one hundred twenty-one million, one hundred twenty-one thousand, one hundred twenty-two".