120100201221 has 128 divisors (see below), whose sum is σ = 223915991040. Its totient is φ = 55230336000.

The previous prime is 120100201099. The next prime is 120100201253. The reversal of 120100201221 is 122102001021.

It is not a de Polignac number, because 120100201221 - 2¹⁴ = 120100184837 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 120100201197 and 120100201206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120100201261) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 13145571 + ... + 13154703.

It is an arithmetic number, because the mean of its divisors is an integer number (1749343680).

Almost surely, 2^120100201221 is an apocalyptic number.

120100201221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120100201221 is a deficient number, since it is larger than the sum of its proper divisors (103815789819).

120100201221 is a wasteful number, since it uses less digits than its factorization.

120100201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9347.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 120100201221 its reverse (122102001021), we get a palindrome (242202202242).

The spelling of 120100201221 in words is "one hundred twenty billion, one hundred million, two hundred one thousand, two hundred twenty-one".