121212020112220 has 12 divisors (see below), whose sum is σ = 254545242235704. Its totient is φ = 48484808044880.

The previous prime is 121212020112217. The next prime is 121212020112223. The reversal of 121212020112220 is 22211020212121.

It is an interprime number because it is at equal distance from previous prime (121212020112217) and next prime (121212020112223).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121212020112223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3030300502786 + ... + 3030300502825.

It is an arithmetic number, because the mean of its divisors is an integer number (21212103519642).

Almost surely, 2^{121212020112220} is an apocalyptic number.

121212020112220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121212020112220 is an abundant number, since it is smaller than the sum of its proper divisors (133333222123484).

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

121212020112220 is a wasteful number, since it uses less digits than its factorization.

121212020112220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6060601005620 (or 6060601005618 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 121212020112220 its reverse (22211020212121), we get a palindrome (143423040324341).

Subtracting from 121212020112220 its reverse (22211020212121), we obtain a palindrome (99000999900099).

The spelling of 121212020112220 in words is "one hundred twenty-one trillion, two hundred twelve billion, twenty million, one hundred twelve thousand, two hundred twenty".