112121021219 has 4 divisors (see below), whose sum is σ = 115987263360. Its totient is φ = 108254779080.

The previous prime is 112121021209. The next prime is 112121021263. The reversal of 112121021219 is 912120121211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 112121021219 - 2¹² = 112121017123 is a prime.

It is a super-2 number, since 2×112121021219² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112121021194 and 112121021203.

It is not an unprimeable number, because it can be changed into a prime (112121021209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1933121027 + ... + 1933121084.

It is an arithmetic number, because the mean of its divisors is an integer number (28996815840).

Almost surely, 2^112121021219 is an apocalyptic number.

112121021219 is a deficient number, since it is larger than the sum of its proper divisors (3866242141).

112121021219 is an equidigital number, since it uses as much as digits as its factorization.

112121021219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3866242140.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 112121021219 in words is "one hundred twelve billion, one hundred twenty-one million, twenty-one thousand, two hundred nineteen".