121121220200101 has 16 divisors (see below), whose sum is σ = 132168517190208. Its totient is φ = 110079973555200.

The previous prime is 121121220200047. The next prime is 121121220200131. The reversal of 121121220200101 is 101002022121121.

It is a de Polignac number, because none of the positive numbers 2^k-121121220200101 is a prime.

It is a super-2 number, since 2×121121220200101² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121121220200131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 624686911 + ... + 624880771.

It is an arithmetic number, because the mean of its divisors is an integer number (8260532324388).

Almost surely, 2^{121121220200101} is an apocalyptic number.

121121220200101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121121220200101 is a deficient number, since it is larger than the sum of its proper divisors (11047296990107).

121121220200101 is a wasteful number, since it uses less digits than its factorization.

121121220200101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209172.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121121220200101 its reverse (101002022121121), we get a palindrome (222123242321222).

The spelling of 121121220200101 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, two hundred twenty million, two hundred thousand, one hundred one".