121412340220 has 24 divisors (see below), whose sum is σ = 255125634624. Its totient is φ = 48534513216.

The previous prime is 121412340191. The next prime is 121412340221. The reversal of 121412340220 is 22043214121.

It is a super-3 number, since 3×121412340220³ (a number of 34 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121412340191 and 121412340200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121412340221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1868692 + ... + 1932571.

It is an arithmetic number, because the mean of its divisors is an integer number (10630234776).

Almost surely, 2^121412340220 is an apocalyptic number.

121412340220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121412340220 is an abundant number, since it is smaller than the sum of its proper divisors (133713294404).

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

121412340220 is a wasteful number, since it uses less digits than its factorization.

121412340220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3802869 (or 3802867 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 121412340220 its reverse (22043214121), we get a palindrome (143455554341).

The spelling of 121412340220 in words is "one hundred twenty-one billion, four hundred twelve million, three hundred forty thousand, two hundred twenty".