120011212101221 has 32 divisors (see below), whose sum is σ = 141651458457600. Its totient is φ = 101619868118832.

The previous prime is 120011212101211. The next prime is 120011212101233. The reversal of 120011212101221 is 122101212110021.

It is not a de Polignac number, because 120011212101221 - 2³⁸ = 119736334194277 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120011212101221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120011212101211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 402488036 + ... + 402786098.

It is an arithmetic number, because the mean of its divisors is an integer number (4426608076800).

Almost surely, 2^{120011212101221} is an apocalyptic number.

It is an amenable number.

120011212101221 is a deficient number, since it is larger than the sum of its proper divisors (21640246356379).

120011212101221 is an equidigital number, since it uses as much as digits as its factorization.

120011212101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312310 (or 312296 counting only the distinct ones).

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

Adding to 120011212101221 its reverse (122101212110021), we get a palindrome (242112424211242).

The spelling of 120011212101221 in words is "one hundred twenty trillion, eleven billion, two hundred twelve million, one hundred one thousand, two hundred twenty-one".