121112011010021 has 8 divisors (see below), whose sum is σ = 122375116229184. Its totient is φ = 119849202276480.

The previous prime is 121112011010017. The next prime is 121112011010033. The reversal of 121112011010021 is 120010110211121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121112011010021 - 2² = 121112011010017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121112011009978 and 121112011010005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121112011010621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73300115 + ... + 74934176.

It is an arithmetic number, because the mean of its divisors is an integer number (15296889528648).

Almost surely, 2^{121112011010021} is an apocalyptic number.

It is an amenable number.

121112011010021 is a deficient number, since it is larger than the sum of its proper divisors (1263105219163).

121112011010021 is an equidigital number, since it uses as much as digits as its factorization.

121112011010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148242811.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 121112011010021 its reverse (120010110211121), we get a palindrome (241122121221142).

The spelling of 121112011010021 in words is "one hundred twenty-one trillion, one hundred twelve billion, eleven million, ten thousand, twenty-one".