120111122421 has 24 divisors (see below), whose sum is σ = 174278991744. Its totient is φ = 79712102400.

The previous prime is 120111122419. The next prime is 120111122423. The reversal of 120111122421 is 124221111021.

120111122421 is a `hidden beast` number, since 12 + 0 + 111 + 122 + 421 = 666.

It is an interprime number because it is at equal distance from previous prime (120111122419) and next prime (120111122423).

It is not a de Polignac number, because 120111122421 - 2¹ = 120111122419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120111122394 and 120111122403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120111122423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3840196 + ... + 3871346.

It is an arithmetic number, because the mean of its divisors is an integer number (7261624656).

Almost surely, 2^120111122421 is an apocalyptic number.

It is an amenable number.

120111122421 is a deficient number, since it is larger than the sum of its proper divisors (54167869323).

120111122421 is a wasteful number, since it uses less digits than its factorization.

120111122421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33081 (or 33078 counting only the distinct ones).

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

Adding to 120111122421 its reverse (124221111021), we get a palindrome (244332233442).

The spelling of 120111122421 in words is "one hundred twenty billion, one hundred eleven million, one hundred twenty-two thousand, four hundred twenty-one".