2101122100121 has 8 divisors (see below), whose sum is σ = 2292159792000. Its totient is φ = 1910088840240.

The previous prime is 2101122100117. The next prime is 2101122100139. The reversal of 2101122100121 is 1210012211012.

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

It is a cyclic number.

It is not a de Polignac number, because 2101122100121 - 2² = 2101122100117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2101122100096 and 2101122100105.

It is not an unprimeable number, because it can be changed into a prime (2101122100151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74846 + ... + 2051303.

It is an arithmetic number, because the mean of its divisors is an integer number (286519974000).

Almost surely, 2^{2101122100121} is an apocalyptic number.

It is an amenable number.

2101122100121 is a deficient number, since it is larger than the sum of its proper divisors (191037691879).

2101122100121 is a wasteful number, since it uses less digits than its factorization.

2101122100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2215999.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2101122100121 its reverse (1210012211012), we get a palindrome (3311134311133).

The spelling of 2101122100121 in words is "two trillion, one hundred one billion, one hundred twenty-two million, one hundred thousand, one hundred twenty-one".