120100021212221 has 4 divisors (see below), whose sum is σ = 120179505013344. Its totient is φ = 120020537411100.

The previous prime is 120100021212191. The next prime is 120100021212251. The reversal of 120100021212221 is 122212120001021.

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 an interprime number because it is at equal distance from previous prime (120100021212191) and next prime (120100021212251).

It is a cyclic number.

It is not a de Polignac number, because 120100021212221 - 2³⁴ = 120082841343037 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 120100021212221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120100021212251) 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, 39741898295 + ... + 39741901316.

It is an arithmetic number, because the mean of its divisors is an integer number (30044876253336).

Almost surely, 2^{120100021212221} is an apocalyptic number.

It is an amenable number.

120100021212221 is a deficient number, since it is larger than the sum of its proper divisors (79483801123).

120100021212221 is an equidigital number, since it uses as much as digits as its factorization.

120100021212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79483801122.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 120100021212221 its reverse (122212120001021), we get a palindrome (242312141213242).

The spelling of 120100021212221 in words is "one hundred twenty trillion, one hundred billion, twenty-one million, two hundred twelve thousand, two hundred twenty-one".