2221756043 has 4 divisors (see below), whose sum is σ = 2392660368. Its totient is φ = 2050851720.

The previous prime is 2221756037. The next prime is 2221756049. The reversal of 2221756043 is 3406571222.

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

It is an interprime number because it is at equal distance from previous prime (2221756037) and next prime (2221756049).

It is a cyclic number.

It is not a de Polignac number, because 2221756043 - 2¹⁶ = 2221690507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221756049) 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, 85452143 + ... + 85452168.

It is an arithmetic number, because the mean of its divisors is an integer number (598165092).

Almost surely, 2^2221756043 is an apocalyptic number.

2221756043 is a deficient number, since it is larger than the sum of its proper divisors (170904325).

2221756043 is a wasteful number, since it uses less digits than its factorization.

2221756043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170904324.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 2221756043 is about 47135.5072424176. The cubic root of 2221756043 is about 1304.8646225103.

The spelling of 2221756043 in words is "two billion, two hundred twenty-one million, seven hundred fifty-six thousand, forty-three".