121112002112220 has 240 divisors, whose sum is σ = 439440392337408. Its totient is φ = 27349216099200.

The previous prime is 121112002112159. The next prime is 121112002112281. The reversal of 121112002112220 is 22211200211121.

121112002112220 is a `hidden beast` number, since 1 + 21 + 11 + 200 + 211 + 2 + 220 = 666.

It is an interprime number because it is at equal distance from previous prime (121112002112159) and next prime (121112002112281).

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

It is a junction number, because it is equal to n+sod(n) for n = 121112002112193 and 121112002112202.

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, 63396556 + ... + 65278995.

Almost surely, 2^{121112002112220} is an apocalyptic number.

121112002112220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121112002112220 is an abundant number, since it is smaller than the sum of its proper divisors (318328390225188).

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

121112002112220 is a wasteful number, since it uses less digits than its factorization.

121112002112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128675662 (or 128675651 counting only the distinct ones).

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

Adding to 121112002112220 its reverse (22211200211121), we get a palindrome (143323202323341).

The spelling of 121112002112220 in words is "one hundred twenty-one trillion, one hundred twelve billion, two million, one hundred twelve thousand, two hundred twenty".