121211201201 has 16 divisors (see below), whose sum is σ = 127691121600. Its totient is φ = 114944121600.

The previous prime is 121211201173. The next prime is 121211201227. The reversal of 121211201201 is 102102112121.

It is a cyclic number.

It is not a de Polignac number, because 121211201201 - 2²² = 121207006897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121211201231) 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, 66215 + ... + 496796.

It is an arithmetic number, because the mean of its divisors is an integer number (7980695100).

Almost surely, 2^121211201201 is an apocalyptic number.

It is an amenable number.

121211201201 is a deficient number, since it is larger than the sum of its proper divisors (6479920399).

121211201201 is an equidigital number, since it uses as much as digits as its factorization.

121211201201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563200.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121211201201 its reverse (102102112121), we get a palindrome (223313313322).

The spelling of 121211201201 in words is "one hundred twenty-one billion, two hundred eleven million, two hundred one thousand, two hundred one".