121120112112021 has 32 divisors (see below), whose sum is σ = 195754354467840. Its totient is φ = 73404374180400.

The previous prime is 121120112112019. The next prime is 121120112112067. The reversal of 121120112112021 is 120211211021121.

It is a happy number.

121120112112021 is a `hidden beast` number, since 1 + 211 + 201 + 1 + 211 + 20 + 21 = 666.

It is not a de Polignac number, because 121120112112021 - 2¹ = 121120112112019 is a prime.

It is a super-2 number, since 2×121120112112021² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 121120112111985 and 121120112112003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121120112112821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7628586 + ... + 17333076.

It is an arithmetic number, because the mean of its divisors is an integer number (6117323577120).

Almost surely, 2^{121120112112021} is an apocalyptic number.

121120112112021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121120112112021 is a deficient number, since it is larger than the sum of its proper divisors (74634242355819).

121120112112021 is a wasteful number, since it uses less digits than its factorization.

121120112112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9746534 (or 9746528 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 121120112112021 its reverse (120211211021121), we get a palindrome (241331323133142).

The spelling of 121120112112021 in words is "one hundred twenty-one trillion, one hundred twenty billion, one hundred twelve million, one hundred twelve thousand, twenty-one".