2221212019 has 4 divisors (see below), whose sum is σ = 2392074496. Its totient is φ = 2050349544.

The previous prime is 2221212013. The next prime is 2221212041. The reversal of 2221212019 is 9102121222.

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 2221212019 - 2³ = 2221212011 is a prime.

It is a super-2 number, since 2×2221212019² = 9867565666700112722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221212011) 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, 85431219 + ... + 85431244.

It is an arithmetic number, because the mean of its divisors is an integer number (598018624).

Almost surely, 2^2221212019 is an apocalyptic number.

2221212019 is a deficient number, since it is larger than the sum of its proper divisors (170862477).

2221212019 is a wasteful number, since it uses less digits than its factorization.

2221212019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170862476.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 2221212019 is about 47129.7360378774. The cubic root of 2221212019 is about 1304.7581098230.

The spelling of 2221212019 in words is "two billion, two hundred twenty-one million, two hundred twelve thousand, nineteen".