120210121012221 has 24 divisors (see below), whose sum is σ = 175006895192064. Its totient is φ = 79507768626720.

The previous prime is 120210121012181. The next prime is 120210121012249. The reversal of 120210121012221 is 122210121012021.

120210121012221 is a `hidden beast` number, since 1 + 20 + 210 + 1 + 210 + 1 + 2 + 221 = 666.

It is not a de Polignac number, because 120210121012221 - 2²⁷ = 120209986794493 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120210121012194 and 120210121012203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120210121012321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72511816 + ... + 74151086.

It is an arithmetic number, because the mean of its divisors is an integer number (7291953966336).

Almost surely, 2^{120210121012221} is an apocalyptic number.

It is an amenable number.

120210121012221 is a deficient number, since it is larger than the sum of its proper divisors (54796774179843).

120210121012221 is a wasteful number, since it uses less digits than its factorization.

120210121012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1703561 (or 1703558 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 120210121012221 its reverse (122210121012021), we get a palindrome (242420242024242).

The spelling of 120210121012221 in words is "one hundred twenty trillion, two hundred ten billion, one hundred twenty-one million, twelve thousand, two hundred twenty-one".