101122210121 has 4 divisors (see below), whose sum is σ = 101467337412. Its totient is φ = 100777082832.

The previous prime is 101122210103. The next prime is 101122210141. The reversal of 101122210121 is 121012221101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 87060993721 + 14061216400 = 295061^2 + 118580^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101122210121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101122210096 and 101122210105.

It is not an unprimeable number, because it can be changed into a prime (101122210141) 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, 172563206 + ... + 172563791.

It is an arithmetic number, because the mean of its divisors is an integer number (25366834353).

Almost surely, 2^101122210121 is an apocalyptic number.

It is an amenable number.

101122210121 is a deficient number, since it is larger than the sum of its proper divisors (345127291).

101122210121 is an equidigital number, since it uses as much as digits as its factorization.

101122210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345127290.

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

Adding to 101122210121 its reverse (121012221101), we get a palindrome (222134431222).

The spelling of 101122210121 in words is "one hundred one billion, one hundred twenty-two million, two hundred ten thousand, one hundred twenty-one".