121121101110 has 16 divisors (see below), whose sum is σ = 290690642736. Its totient is φ = 32298960288.

The previous prime is 121121101093. The next prime is 121121101139. The reversal of 121121101110 is 11101121121.

It is a super-2 number, since 2×121121101110² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2018684989 + ... + 2018685048.

It is an arithmetic number, because the mean of its divisors is an integer number (18168165171).

Almost surely, 2^121121101110 is an apocalyptic number.

121121101110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121121101110 is an abundant number, since it is smaller than the sum of its proper divisors (169569541626).

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

121121101110 is a wasteful number, since it uses less digits than its factorization.

121121101110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4037370047.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 121121101110 its reverse (11101121121), we get a palindrome (132222222231).

The spelling of 121121101110 in words is "one hundred twenty-one billion, one hundred twenty-one million, one hundred one thousand, one hundred ten".