101121201023 has 4 divisors (see below), whose sum is σ = 101122639800. Its totient is φ = 101119762248.

The previous prime is 101121201001. The next prime is 101121201053. The reversal of 101121201023 is 320102121101.

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

It is a cyclic number.

It is not a de Polignac number, because 101121201023 - 2²⁰ = 101120152447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101121200989 and 101121201007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101121201053) 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, 608240 + ... + 756437.

It is an arithmetic number, because the mean of its divisors is an integer number (25280659950).

Almost surely, 2^101121201023 is an apocalyptic number.

101121201023 is a deficient number, since it is larger than the sum of its proper divisors (1438777).

101121201023 is an equidigital number, since it uses as much as digits as its factorization.

101121201023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1438776.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 101121201023 its reverse (320102121101), we get a palindrome (421223322124).

The spelling of 101121201023 in words is "one hundred one billion, one hundred twenty-one million, two hundred one thousand, twenty-three".