121121101021110 has 64 divisors (see below), whose sum is σ = 293620862304000. Its totient is φ = 31974711910272.

The previous prime is 121121101021099. The next prime is 121121101021121. The reversal of 121121101021110 is 11120101121121.

It is an interprime number because it is at equal distance from previous prime (121121101021099) and next prime (121121101021121).

It is a super-2 number, since 2×121121101021110² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 121121101021110.

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, 40157604 + ... + 43068263.

It is an arithmetic number, because the mean of its divisors is an integer number (4587825973500).

Almost surely, 2^{121121101021110} is an apocalyptic number.

121121101021110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121121101021110 is an abundant number, since it is smaller than the sum of its proper divisors (172499761282890).

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

121121101021110 is a wasteful number, since it uses less digits than its factorization.

121121101021110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83226365.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 121121101021110 its reverse (11120101121121), we get a palindrome (132241202142231).

The spelling of 121121101021110 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, one hundred one million, twenty-one thousand, one hundred ten".