121002023010221 has 4 divisors (see below), whose sum is σ = 121003261778592. Its totient is φ = 121000784241852.

The previous prime is 121002023010181. The next prime is 121002023010263. The reversal of 121002023010221 is 122010320200121.

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 121002023010221 - 2²⁶ = 121001955901357 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 121002023010221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121002023010521) 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, 619237655 + ... + 619433028.

It is an arithmetic number, because the mean of its divisors is an integer number (30250815444648).

Almost surely, 2^{121002023010221} is an apocalyptic number.

It is an amenable number.

121002023010221 is a deficient number, since it is larger than the sum of its proper divisors (1238768371).

121002023010221 is an equidigital number, since it uses as much as digits as its factorization.

121002023010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1238768370.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 121002023010221 its reverse (122010320200121), we get a palindrome (243012343210342).

The spelling of 121002023010221 in words is "one hundred twenty-one trillion, two billion, twenty-three million, ten thousand, two hundred twenty-one".