121101020110 has 48 divisors (see below), whose sum is σ = 253609593840. Its totient is φ = 41513982720.

The previous prime is 121101020107. The next prime is 121101020147. The reversal of 121101020110 is 11020101121.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4086045 + ... + 4115575.

It is an arithmetic number, because the mean of its divisors is an integer number (5283533205).

Almost surely, 2^121101020110 is an apocalyptic number.

121101020110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121101020110 is an abundant number, since it is smaller than the sum of its proper divisors (132508573730).

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

121101020110 is a wasteful number, since it uses less digits than its factorization.

121101020110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37921 (or 37914 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 121101020110 its reverse (11020101121), we get a palindrome (132121121231).

The spelling of 121101020110 in words is "one hundred twenty-one billion, one hundred one million, twenty thousand, one hundred ten".