121100101110 has 64 divisors (see below), whose sum is σ = 323091624960. Its totient is φ = 32277558240.

The previous prime is 121100101093. The next prime is 121100101139. The reversal of 121100101110 is 11101001121.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 121100101092 and 121100101101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 448305 + ... + 665715.

It is an arithmetic number, because the mean of its divisors is an integer number (5048306640).

Almost surely, 2^121100101110 is an apocalyptic number.

121100101110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121100101110 is an abundant number, since it is smaller than the sum of its proper divisors (201991523850).

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

121100101110 is a wasteful number, since it uses less digits than its factorization.

121100101110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219490 (or 219484 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 121100101110 its reverse (11101001121), we get a palindrome (132201102231).

The spelling of 121100101110 in words is "one hundred twenty-one billion, one hundred million, one hundred one thousand, one hundred ten".