121211102200101 has 16 divisors (see below), whose sum is σ = 161902728020160. Its totient is φ = 80663566613120.

The previous prime is 121211102200091. The next prime is 121211102200103. The reversal of 121211102200101 is 101002201112121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121211102200101 - 2⁴⁵ = 86026730111269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121211102200103) 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, 12162771 + ... + 19757408.

It is an arithmetic number, because the mean of its divisors is an integer number (10118920501260).

Almost surely, 2^{121211102200101} is an apocalyptic number.

It is an amenable number.

121211102200101 is a deficient number, since it is larger than the sum of its proper divisors (40691625820059).

121211102200101 is a wasteful number, since it uses less digits than its factorization.

121211102200101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31922436.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 121211102200101 its reverse (101002201112121), we get a palindrome (222213303312222).

The spelling of 121211102200101 in words is "one hundred twenty-one trillion, two hundred eleven billion, one hundred two million, two hundred thousand, one hundred one".