121101022111100 has 72 divisors (see below), whose sum is σ = 264685906882320. Its totient is φ = 48090804894720.

The previous prime is 121101022111087. The next prime is 121101022111109. The reversal of 121101022111100 is 1111220101121.

It is a super-4 number, since 4×121101022111100⁴ (a number of 57 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121101022111109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 874199042 + ... + 874337558.

Almost surely, 2^{121101022111100} is an apocalyptic number.

121101022111100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121101022111100 is an abundant number, since it is smaller than the sum of its proper divisors (143584884771220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121101022111100 is a wasteful number, since it uses less digits than its factorization.

121101022111100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201567 (or 201560 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 121101022111100 its reverse (1111220101121), we get a palindrome (122212242212221).

The spelling of 121101022111100 in words is "one hundred twenty-one trillion, one hundred one billion, twenty-two million, one hundred eleven thousand, one hundred".