121220222100201 has 32 divisors (see below), whose sum is σ = 208605187500800. Its totient is φ = 68133145904640.

The previous prime is 121220222100163. The next prime is 121220222100233. The reversal of 121220222100201 is 102001222022121.

It is a happy number.

121220222100201 is a `hidden beast` number, since 1 + 21 + 220 + 2 + 221 + 0 + 0 + 201 = 666.

It is not a de Polignac number, because 121220222100201 - 2¹⁷ = 121220221969129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121220222100701) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5257175656 + ... + 5257198713.

It is an arithmetic number, because the mean of its divisors is an integer number (6518912109400).

Almost surely, 2^{121220222100201} is an apocalyptic number.

It is an amenable number.

121220222100201 is a deficient number, since it is larger than the sum of its proper divisors (87384965400599).

121220222100201 is a wasteful number, since it uses less digits than its factorization.

121220222100201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10514374446 (or 10514374440 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 121220222100201 its reverse (102001222022121), we get a palindrome (223221444122322).

The spelling of 121220222100201 in words is "one hundred twenty-one trillion, two hundred twenty billion, two hundred twenty-two million, one hundred thousand, two hundred one".