121220101202201 has 16 divisors (see below), whose sum is σ = 122939792781696. Its totient is φ = 119502017940096.

The previous prime is 121220101202197. The next prime is 121220101202209. The reversal of 121220101202201 is 102202101022121.

It is a cyclic number.

It is not a de Polignac number, because 121220101202201 - 2² = 121220101202197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121220101202201.

It is not an unprimeable number, because it can be changed into a prime (121220101202209) 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, 2224480511 + ... + 2224535003.

It is an arithmetic number, because the mean of its divisors is an integer number (7683737048856).

Almost surely, 2^{121220101202201} is an apocalyptic number.

It is an amenable number.

121220101202201 is a deficient number, since it is larger than the sum of its proper divisors (1719691579495).

121220101202201 is a wasteful number, since it uses less digits than its factorization.

121220101202201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68672.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121220101202201 its reverse (102202101022121), we get a palindrome (223422202224322).

The spelling of 121220101202201 in words is "one hundred twenty-one trillion, two hundred twenty billion, one hundred one million, two hundred two thousand, two hundred one".