1211242514 has 16 divisors (see below), whose sum is σ = 1995641280. Its totient is φ = 548800560.

The previous prime is 1211242481. The next prime is 1211242519. The reversal of 1211242514 is 4152421121.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a self number, because there is not a number n which added to its sum of digits gives 1211242514.

It is not an unprimeable number, because it can be changed into a prime (1211242519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 692057 + ... + 693804.

It is an arithmetic number, because the mean of its divisors is an integer number (124727580).

Almost surely, 2^1211242514 is an apocalyptic number.

1211242514 is a deficient number, since it is larger than the sum of its proper divisors (784398766).

1211242514 is a wasteful number, since it uses less digits than its factorization.

1211242514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1385905.

The product of its digits is 640, while the sum is 23.

The square root of 1211242514 is about 34802.9095622765. The cubic root of 1211242514 is about 1065.9668573602.

Adding to 1211242514 its reverse (4152421121), we get a palindrome (5363663635).

The spelling of 1211242514 in words is "one billion, two hundred eleven million, two hundred forty-two thousand, five hundred fourteen".