1213354501 has 2 divisors, whose sum is σ = 1213354502. Its totient is φ = 1213354500.

The previous prime is 1213354487. The next prime is 1213354613. The reversal of 1213354501 is 1054533121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1152670401 + 60684100 = 33951^2 + 7790^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213354501 - 2⁵ = 1213354469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1213354201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606677250 + 606677251.

It is an arithmetic number, because the mean of its divisors is an integer number (606677251).

Almost surely, 2^1213354501 is an apocalyptic number.

It is an amenable number.

1213354501 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213354501 is an equidigital number, since it uses as much as digits as its factorization.

1213354501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1213354501 is about 34833.2384512264. The cubic root of 1213354501 is about 1066.5860564842.

Adding to 1213354501 its reverse (1054533121), we get a palindrome (2267887622).

The spelling of 1213354501 in words is "one billion, two hundred thirteen million, three hundred fifty-four thousand, five hundred one".