121021212022110 has 160 divisors (see below), whose sum is σ = 344694271664160. Its totient is φ = 30361630629888.

The previous prime is 121021212022079. The next prime is 121021212022163. The reversal of 121021212022110 is 11220212120121.

121021212022110 is a `hidden beast` number, since 1 + 210 + 21 + 21 + 202 + 211 + 0 = 666.

It is a super-2 number, since 2×121021212022110² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 32189326 + ... + 35751854.

It is an arithmetic number, because the mean of its divisors is an integer number (2154339197901).

Almost surely, 2^{121021212022110} is an apocalyptic number.

121021212022110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 121021212022110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172347135832080).

121021212022110 is an abundant number, since it is smaller than the sum of its proper divisors (223673059642050).

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

121021212022110 is a wasteful number, since it uses less digits than its factorization.

121021212022110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3565032 (or 3565023 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 121021212022110 its reverse (11220212120121), we get a palindrome (132241424142231).

The spelling of 121021212022110 in words is "one hundred twenty-one trillion, twenty-one billion, two hundred twelve million, twenty-two thousand, one hundred ten".