101121002121 has 4 divisors (see below), whose sum is σ = 134828002832. Its totient is φ = 67414001412.

The previous prime is 101121002083. The next prime is 101121002123. The reversal of 101121002121 is 121200121101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-101121002121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101121002097 and 101121002106.

It is not an unprimeable number, because it can be changed into a prime (101121002123) 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, 16853500351 + ... + 16853500356.

It is an arithmetic number, because the mean of its divisors is an integer number (33707000708).

Almost surely, 2^101121002121 is an apocalyptic number.

It is an amenable number.

101121002121 is a deficient number, since it is larger than the sum of its proper divisors (33707000711).

101121002121 is an equidigital number, since it uses as much as digits as its factorization.

101121002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33707000710.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 101121002121 its reverse (121200121101), we get a palindrome (222321123222).

The spelling of 101121002121 in words is "one hundred one billion, one hundred twenty-one million, two thousand, one hundred twenty-one".