2101023131121 has 32 divisors (see below), whose sum is σ = 3133608458240. Its totient is φ = 1391242554000.

The previous prime is 2101023131093. The next prime is 2101023131149. The reversal of 2101023131121 is 1211313201012.

2101023131121 is a `hidden beast` number, since 2 + 101 + 0 + 231 + 311 + 21 = 666.

It is an interprime number because it is at equal distance from previous prime (2101023131093) and next prime (2101023131149).

It is not a de Polignac number, because 2101023131121 - 2¹⁰ = 2101023130097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2101023131094 and 2101023131103.

It is not an unprimeable number, because it can be changed into a prime (2101023131621) 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, 41735556 + ... + 41785866.

It is an arithmetic number, because the mean of its divisors is an integer number (97925264320).

Almost surely, 2^{2101023131121} is an apocalyptic number.

It is an amenable number.

2101023131121 is a deficient number, since it is larger than the sum of its proper divisors (1032585327119).

2101023131121 is a wasteful number, since it uses less digits than its factorization.

2101023131121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60714 (or 60708 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 2101023131121 its reverse (1211313201012), we get a palindrome (3312336332133).

The spelling of 2101023131121 in words is "two trillion, one hundred one billion, twenty-three million, one hundred thirty-one thousand, one hundred twenty-one".