120211201221221 has 8 divisors (see below), whose sum is σ = 131702322682944. Its totient is φ = 108813884833120.

The previous prime is 120211201221217. The next prime is 120211201221229. The reversal of 120211201221221 is 122122102112021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120211201221221 - 2² = 120211201221217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120211201221193 and 120211201221202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120211201221229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23451265721 + ... + 23451270846.

It is an arithmetic number, because the mean of its divisors is an integer number (16462790335368).

Almost surely, 2^{120211201221221} is an apocalyptic number.

120211201221221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120211201221221 is a deficient number, since it is larger than the sum of its proper divisors (11491121461723).

120211201221221 is a wasteful number, since it uses less digits than its factorization.

120211201221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46902536811.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 120211201221221 its reverse (122122102112021), we get a palindrome (242333303333242).

The spelling of 120211201221221 in words is "one hundred twenty trillion, two hundred eleven billion, two hundred one million, two hundred twenty-one thousand, two hundred twenty-one".