2122120019 has 4 divisors (see below), whose sum is σ = 2141589120. Its totient is φ = 2102650920.

The previous prime is 2122119913. The next prime is 2122120031. The reversal of 2122120019 is 9100212212.

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 2122120019 - 2¹² = 2122115923 is a prime.

It is a super-2 number, since 2×2122120019² = 9006786750081120722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2122120079) 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, 9734387 + ... + 9734604.

It is an arithmetic number, because the mean of its divisors is an integer number (535397280).

Almost surely, 2^2122120019 is an apocalyptic number.

2122120019 is a deficient number, since it is larger than the sum of its proper divisors (19469101).

2122120019 is a wasteful number, since it uses less digits than its factorization.

2122120019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19469100.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 2122120019 is about 46066.4739154192. The cubic root of 2122120019 is about 1285.0597294426.

The spelling of 2122120019 in words is "two billion, one hundred twenty-two million, one hundred twenty thousand, nineteen".