120001221222101 has 4 divisors (see below), whose sum is σ = 120019550420832. Its totient is φ = 119982892023372.

The previous prime is 120001221222049. The next prime is 120001221222131. The reversal of 120001221222101 is 101222122100021.

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 120001221222101 - 2¹⁴ = 120001221205717 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 120001221222101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120001221222131) 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, 9164589545 + ... + 9164602638.

It is an arithmetic number, because the mean of its divisors is an integer number (30004887605208).

Almost surely, 2^{120001221222101} is an apocalyptic number.

It is an amenable number.

120001221222101 is a deficient number, since it is larger than the sum of its proper divisors (18329198731).

120001221222101 is an equidigital number, since it uses as much as digits as its factorization.

120001221222101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18329198730.

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

Adding to 120001221222101 its reverse (101222122100021), we get a palindrome (221223343322122).

The spelling of 120001221222101 in words is "one hundred twenty trillion, one billion, two hundred twenty-one million, two hundred twenty-two thousand, one hundred one".