120221001221221 has 16 divisors (see below), whose sum is σ = 127556974440000. Its totient is φ = 113104704585600.

The previous prime is 120221001221207. The next prime is 120221001221249. The reversal of 120221001221221 is 122122100122021.

It is a cyclic number.

It is not a de Polignac number, because 120221001221221 - 2¹⁷ = 120221001090149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120221001221021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61372971 + ... + 63301528.

It is an arithmetic number, because the mean of its divisors is an integer number (7972310902500).

Almost surely, 2^{120221001221221} is an apocalyptic number.

It is an amenable number.

120221001221221 is a deficient number, since it is larger than the sum of its proper divisors (7335973218779).

120221001221221 is a wasteful number, since it uses less digits than its factorization.

120221001221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124675380.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 120221001221221 its reverse (122122100122021), we get a palindrome (242343101343242).

The spelling of 120221001221221 in words is "one hundred twenty trillion, two hundred twenty-one billion, one million, two hundred twenty-one thousand, two hundred twenty-one".