121212200122101 has 32 divisors (see below), whose sum is σ = 195900409482240. Its totient is φ = 73461225380400.

The previous prime is 121212200122093. The next prime is 121212200122103. The reversal of 121212200122101 is 101221002212121.

121212200122101 is a `hidden beast` number, since 121 + 212 + 200 + 122 + 10 + 1 = 666.

It is not a de Polignac number, because 121212200122101 - 2³ = 121212200122093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121212200122103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29459496 + ... + 33320958.

It is an arithmetic number, because the mean of its divisors is an integer number (6121887796320).

Almost surely, 2^{121212200122101} is an apocalyptic number.

121212200122101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121212200122101 is a deficient number, since it is larger than the sum of its proper divisors (74688209360139).

121212200122101 is a wasteful number, since it uses less digits than its factorization.

121212200122101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3967174 (or 3967168 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 121212200122101 its reverse (101221002212121), we get a palindrome (222433202334222).

The spelling of 121212200122101 in words is "one hundred twenty-one trillion, two hundred twelve billion, two hundred million, one hundred twenty-two thousand, one hundred one".