2122121019 has 4 divisors (see below), whose sum is σ = 2829494696. Its totient is φ = 1414747344.

The previous prime is 2122121003. The next prime is 2122121041. The reversal of 2122121019 is 9101212212.

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

It is not a de Polignac number, because 2122121019 - 2⁴ = 2122121003 is a prime.

It is a super-2 number, since 2×2122121019² = 9006795238563196722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2122120986 and 2122121004.

It is not an unprimeable number, because it can be changed into a prime (2122121119) 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, 353686834 + ... + 353686839.

It is an arithmetic number, because the mean of its divisors is an integer number (707373674).

Almost surely, 2^2122121019 is an apocalyptic number.

2122121019 is a deficient number, since it is larger than the sum of its proper divisors (707373677).

2122121019 is an equidigital number, since it uses as much as digits as its factorization.

2122121019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707373676.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 2122121019 is about 46066.4847692984. The cubic root of 2122121019 is about 1285.0599312942.

The spelling of 2122121019 in words is "two billion, one hundred twenty-two million, one hundred twenty-one thousand, nineteen".