121112112201201 has 24 divisors (see below), whose sum is σ = 196999564719360. Its totient is φ = 71033496890400.

The previous prime is 121112112201173. The next prime is 121112112201211. The reversal of 121112112201201 is 102102211211121.

It is a happy number.

121112112201201 is a `hidden beast` number, since 1 + 2 + 111 + 211 + 220 + 120 + 1 = 666.

It is not a de Polignac number, because 121112112201201 - 2¹⁷ = 121112112070129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121112112201211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19731523846 + ... + 19731529983.

It is an arithmetic number, because the mean of its divisors is an integer number (8208315196640).

Almost surely, 2^{121112112201201} is an apocalyptic number.

121112112201201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121112112201201 is a deficient number, since it is larger than the sum of its proper divisors (75887452518159).

121112112201201 is a wasteful number, since it uses less digits than its factorization.

121112112201201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39463053877 (or 39463053874 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 121112112201201 its reverse (102102211211121), we get a palindrome (223214323412322).

The spelling of 121112112201201 in words is "one hundred twenty-one trillion, one hundred twelve billion, one hundred twelve million, two hundred one thousand, two hundred one".