101210122121 has 4 divisors (see below), whose sum is σ = 101213390352. Its totient is φ = 101206853892.

The previous prime is 101210122109. The next prime is 101210122129. The reversal of 101210122121 is 121221012101.

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 cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101210122121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101210122096 and 101210122105.

It is not an unprimeable number, because it can be changed into a prime (101210122129) 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, 1587215 + ... + 1649748.

It is an arithmetic number, because the mean of its divisors is an integer number (25303347588).

Almost surely, 2^101210122121 is an apocalyptic number.

It is an amenable number.

101210122121 is a deficient number, since it is larger than the sum of its proper divisors (3268231).

101210122121 is an equidigital number, since it uses as much as digits as its factorization.

101210122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3268230.

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

Adding to 101210122121 its reverse (121221012101), we get a palindrome (222431134222).

The spelling of 101210122121 in words is "one hundred one billion, two hundred ten million, one hundred twenty-two thousand, one hundred twenty-one".