120010111221221 has 12 divisors (see below), whose sum is σ = 129958737763680. Its totient is φ = 110772630642960.

The previous prime is 120010111221197. The next prime is 120010111221229. The reversal of 120010111221221 is 122122111010021.

It is a de Polignac number, because none of the positive numbers 2^k-120010111221221 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 120010111221221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120010111221229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15851735 + ... + 22165236.

It is an arithmetic number, because the mean of its divisors is an integer number (10829894813640).

Almost surely, 2^{120010111221221} is an apocalyptic number.

It is an amenable number.

120010111221221 is a deficient number, since it is larger than the sum of its proper divisors (9948626542459).

120010111221221 is a wasteful number, since it uses less digits than its factorization.

120010111221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38035676 (or 38035663 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 120010111221221 its reverse (122122111010021), we get a palindrome (242132222231242).

The spelling of 120010111221221 in words is "one hundred twenty trillion, ten billion, one hundred eleven million, two hundred twenty-one thousand, two hundred twenty-one".