120212122221021 has 4 divisors (see below), whose sum is σ = 160282829628032. Its totient is φ = 80141414814012.

The previous prime is 120212122221017. The next prime is 120212122221031. The reversal of 120212122221021 is 120122221212021.

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 not a de Polignac number, because 120212122221021 - 2² = 120212122221017 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 (120212122221001) 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, 20035353703501 + ... + 20035353703506.

It is an arithmetic number, because the mean of its divisors is an integer number (40070707407008).

Almost surely, 2^{120212122221021} is an apocalyptic number.

It is an amenable number.

120212122221021 is a deficient number, since it is larger than the sum of its proper divisors (40070707407011).

120212122221021 is an equidigital number, since it uses as much as digits as its factorization.

120212122221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40070707407010.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 120212122221021 its reverse (120122221212021), we get a palindrome (240334343433042).

The spelling of 120212122221021 in words is "one hundred twenty trillion, two hundred twelve billion, one hundred twenty-two million, two hundred twenty-one thousand, twenty-one".