2221421519 has 4 divisors (see below), whose sum is σ = 2221589040. Its totient is φ = 2221254000.

The previous prime is 2221421491. The next prime is 2221421557. The reversal of 2221421519 is 9151241222.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2221421519 is a prime.

It is a super-2 number, since 2×2221421519² = 9869427130152534722, 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 = 2221421491 and 2221421500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221420519) 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, 61982 + ... + 91019.

It is an arithmetic number, because the mean of its divisors is an integer number (555397260).

Almost surely, 2^2221421519 is an apocalyptic number.

2221421519 is a deficient number, since it is larger than the sum of its proper divisors (167521).

2221421519 is a wasteful number, since it uses less digits than its factorization.

2221421519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167520.

The product of its digits is 2880, while the sum is 29.

The square root of 2221421519 is about 47131.9585737745. The cubic root of 2221421519 is about 1304.7991292047.

The spelling of 2221421519 in words is "two billion, two hundred twenty-one million, four hundred twenty-one thousand, five hundred nineteen".