121020110221110 has 32 divisors (see below), whose sum is σ = 290451546634752. Its totient is φ = 32271664714080.

The previous prime is 121020110221103. The next prime is 121020110221117. The reversal of 121020110221110 is 11122011020121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (121020110221103) and next prime (121020110221117).

It is a super-3 number, since 3×121020110221110³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 121020110221110.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121020110221117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20088046 + ... + 25408065.

It is an arithmetic number, because the mean of its divisors is an integer number (9076610832336).

Almost surely, 2^{121020110221110} is an apocalyptic number.

121020110221110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121020110221110 is an abundant number, since it is smaller than the sum of its proper divisors (169431436413642).

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

121020110221110 is a wasteful number, since it uses less digits than its factorization.

121020110221110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45584788.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 121020110221110 its reverse (11122011020121), we get a palindrome (132142121241231).

The spelling of 121020110221110 in words is "one hundred twenty-one trillion, twenty billion, one hundred ten million, two hundred twenty-one thousand, one hundred ten".