121001012023 has 4 divisors (see below), whose sum is σ = 127369486360. Its totient is φ = 114632537688.

The previous prime is 121001012009. The next prime is 121001012029. The reversal of 121001012023 is 320210100121.

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 121001012023 - 2¹³ = 121001003831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121001011994 and 121001012012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121001012029) 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, 3184237140 + ... + 3184237177.

It is an arithmetic number, because the mean of its divisors is an integer number (31842371590).

Almost surely, 2^121001012023 is an apocalyptic number.

121001012023 is a deficient number, since it is larger than the sum of its proper divisors (6368474337).

121001012023 is an equidigital number, since it uses as much as digits as its factorization.

121001012023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6368474336.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 121001012023 its reverse (320210100121), we get a palindrome (441211112144).

The spelling of 121001012023 in words is "one hundred twenty-one billion, one million, twelve thousand, twenty-three".