120221221120021 has 16 divisors (see below), whose sum is σ = 142186246646400. Its totient is φ = 99496356747840.

The previous prime is 120221221120019. The next prime is 120221221120031. The reversal of 120221221120021 is 120021122122021.

It is a cyclic number.

It is not a de Polignac number, because 120221221120021 - 2¹ = 120221221120019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120221221120031) 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, 1771624846 + ... + 1771692703.

It is an arithmetic number, because the mean of its divisors is an integer number (8886640415400).

Almost surely, 2^{120221221120021} is an apocalyptic number.

It is an amenable number.

120221221120021 is a deficient number, since it is larger than the sum of its proper divisors (21965025526379).

120221221120021 is a wasteful number, since it uses less digits than its factorization.

120221221120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3543317724.

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

Adding to 120221221120021 its reverse (120021122122021), we get a palindrome (240242343242042).

The spelling of 120221221120021 in words is "one hundred twenty trillion, two hundred twenty-one billion, two hundred twenty-one million, one hundred twenty thousand, twenty-one".