101220010121 has 4 divisors (see below), whose sum is σ = 102165991632. Its totient is φ = 100274028612.

The previous prime is 101220010117. The next prime is 101220010141. The reversal of 101220010121 is 121010022101.

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 not a de Polignac number, because 101220010121 - 2² = 101220010117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101220010141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 472990595 + ... + 472990808.

It is an arithmetic number, because the mean of its divisors is an integer number (25541497908).

Almost surely, 2^101220010121 is an apocalyptic number.

It is an amenable number.

101220010121 is a deficient number, since it is larger than the sum of its proper divisors (945981511).

101220010121 is an equidigital number, since it uses as much as digits as its factorization.

101220010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945981510.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 101220010121 its reverse (121010022101), we get a palindrome (222230032222).

The spelling of 101220010121 in words is "one hundred one billion, two hundred twenty million, ten thousand, one hundred twenty-one".