121211102021201 has 16 divisors (see below), whose sum is σ = 126947586006528. Its totient is φ = 115595890819200.

The previous prime is 121211102021183. The next prime is 121211102021239. The reversal of 121211102021201 is 102120201112121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121211102021201 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 121211102021201.

It is not an unprimeable number, because it can be changed into a prime (121211102021501) 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, 58309580 + ... + 60352541.

It is an arithmetic number, because the mean of its divisors is an integer number (7934224125408).

Almost surely, 2^{121211102021201} is an apocalyptic number.

It is an amenable number.

121211102021201 is a deficient number, since it is larger than the sum of its proper divisors (5736483985327).

121211102021201 is a wasteful number, since it uses less digits than its factorization.

121211102021201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118662632.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 121211102021201 its reverse (102120201112121), we get a palindrome (223331303133322).

The spelling of 121211102021201 in words is "one hundred twenty-one trillion, two hundred eleven billion, one hundred two million, twenty-one thousand, two hundred one".