120210211221 has 4 divisors (see below), whose sum is σ = 160280281632. Its totient is φ = 80140140812.

The previous prime is 120210211217. The next prime is 120210211267. The reversal of 120210211221 is 122112012021.

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 120210211221 - 2² = 120210211217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120210211221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120210211721) 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, 20035035201 + ... + 20035035206.

It is an arithmetic number, because the mean of its divisors is an integer number (40070070408).

Almost surely, 2^120210211221 is an apocalyptic number.

It is an amenable number.

120210211221 is a deficient number, since it is larger than the sum of its proper divisors (40070070411).

120210211221 is an equidigital number, since it uses as much as digits as its factorization.

120210211221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40070070410.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 120210211221 its reverse (122112012021), we get a palindrome (242322223242).

The spelling of 120210211221 in words is "one hundred twenty billion, two hundred ten million, two hundred eleven thousand, two hundred twenty-one".