2045421111 has 4 divisors (see below), whose sum is σ = 2727228152. Its totient is φ = 1363614072.

The previous prime is 2045421061. The next prime is 2045421121. The reversal of 2045421111 is 1111245402.

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

It is not a de Polignac number, because 2045421111 - 2⁶ = 2045421047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2045421121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 340903516 + ... + 340903521.

It is an arithmetic number, because the mean of its divisors is an integer number (681807038).

Almost surely, 2^2045421111 is an apocalyptic number.

2045421111 is a deficient number, since it is larger than the sum of its proper divisors (681807041).

2045421111 is an equidigital number, since it uses as much as digits as its factorization.

2045421111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681807040.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 2045421111 is about 45226.3320533514. The cubic root of 2045421111 is about 1269.3875797749.

Adding to 2045421111 its reverse (1111245402), we get a palindrome (3156666513).

The spelling of 2045421111 in words is "two billion, forty-five million, four hundred twenty-one thousand, one hundred eleven".