45121211 has 2 divisors, whose sum is σ = 45121212. Its totient is φ = 45121210.

The previous prime is 45121201. The next prime is 45121231. The reversal of 45121211 is 11212154.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45121211 - 2¹⁴ = 45104827 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45121211.

It is not a weakly prime, because it can be changed into another prime (45121201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22560605 + 22560606.

It is an arithmetic number, because the mean of its divisors is an integer number (22560606).

Almost surely, 2^45121211 is an apocalyptic number.

45121211 is a deficient number, since it is larger than the sum of its proper divisors (1).

45121211 is an equidigital number, since it uses as much as digits as its factorization.

45121211 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 45121211 is about 6717.2323913945. The cubic root of 45121211 is about 356.0084030967.

Adding to 45121211 its reverse (11212154), we get a palindrome (56333365).

It can be divided in two parts, 4 and 5121211, that added together give a palindrome (5121215).

The spelling of 45121211 in words is "forty-five million, one hundred twenty-one thousand, two hundred eleven".