101123110021121 has 4 divisors (see below), whose sum is σ = 101124840839472. Its totient is φ = 101121379202772.

The previous prime is 101123110021081. The next prime is 101123110021147. The reversal of 101123110021121 is 121120011321101.

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-101123110021121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101123110021121.

It is not an unprimeable number, because it can be changed into a prime (101123110021151) 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, 865321535 + ... + 865438388.

It is an arithmetic number, because the mean of its divisors is an integer number (25281210209868).

Almost surely, 2^{101123110021121} is an apocalyptic number.

It is an amenable number.

101123110021121 is a deficient number, since it is larger than the sum of its proper divisors (1730818351).

101123110021121 is an equidigital number, since it uses as much as digits as its factorization.

101123110021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1730818350.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 101123110021121 its reverse (121120011321101), we get a palindrome (222243121342222).

The spelling of 101123110021121 in words is "one hundred one trillion, one hundred twenty-three billion, one hundred ten million, twenty-one thousand, one hundred twenty-one".