121220111103030 has 48 divisors (see below), whose sum is σ = 316247962277520. Its totient is φ = 32215037482944.

The previous prime is 121220111103017. The next prime is 121220111103041. The reversal of 121220111103030 is 30301111022121.

121220111103030 is a `hidden beast` number, since 1 + 21 + 220 + 11 + 110 + 303 + 0 = 666.

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 = 121220111102994 and 121220111103012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2298420940 + ... + 2298473679.

It is an arithmetic number, because the mean of its divisors is an integer number (6588499214115).

Almost surely, 2^{121220111103030} is an apocalyptic number.

121220111103030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121220111103030 is an abundant number, since it is smaller than the sum of its proper divisors (195027851174490).

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

121220111103030 is a wasteful number, since it uses less digits than its factorization.

121220111103030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4596894925 (or 4596894922 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 121220111103030 its reverse (30301111022121), we get a palindrome (151521222125151).

The spelling of 121220111103030 in words is "one hundred twenty-one trillion, two hundred twenty billion, one hundred eleven million, one hundred three thousand, thirty".