45122111 has 2 divisors, whose sum is σ = 45122112. Its totient is φ = 45122110.

The previous prime is 45122101. The next prime is 45122123. The reversal of 45122111 is 11122154.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45122111 - 2⁶ = 45122047 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45122111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45122101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22561055 + 22561056.

It is an arithmetic number, because the mean of its divisors is an integer number (22561056).

Almost surely, 2^45122111 is an apocalyptic number.

45122111 is a deficient number, since it is larger than the sum of its proper divisors (1).

45122111 is an equidigital number, since it uses as much as digits as its factorization.

45122111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80, while the sum is 17.

The square root of 45122111 is about 6717.2993829366. The cubic root of 45122111 is about 356.0107700946.

Adding to 45122111 its reverse (11122154), we get a palindrome (56244265).

The spelling of 45122111 in words is "forty-five million, one hundred twenty-two thousand, one hundred eleven".