120001212210221 has 16 divisors (see below), whose sum is σ = 124231758604800. Its totient is φ = 115793161727040.

The previous prime is 120001212210137. The next prime is 120001212210247. The reversal of 120001212210221 is 122012212100021.

It is a cyclic number.

It is not a de Polignac number, because 120001212210221 - 2⁴² = 115603165699117 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 120001212210221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120001212210821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 313852055 + ... + 314234171.

It is an arithmetic number, because the mean of its divisors is an integer number (7764484912800).

Almost surely, 2^{120001212210221} is an apocalyptic number.

It is an amenable number.

120001212210221 is a deficient number, since it is larger than the sum of its proper divisors (4230546394579).

120001212210221 is a wasteful number, since it uses less digits than its factorization.

120001212210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411524.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 120001212210221 its reverse (122012212100021), we get a palindrome (242013424310242).

The spelling of 120001212210221 in words is "one hundred twenty trillion, one billion, two hundred twelve million, two hundred ten thousand, two hundred twenty-one".