1211145514 has 8 divisors (see below), whose sum is σ = 1817813088. Its totient is φ = 605207820.

The previous prime is 1211145511. The next prime is 1211145521. The reversal of 1211145514 is 4155411121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1211145511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178302 + ... + 184969.

It is an arithmetic number, because the mean of its divisors is an integer number (227226636).

Almost surely, 2^1211145514 is an apocalyptic number.

1211145514 is a deficient number, since it is larger than the sum of its proper divisors (606667574).

1211145514 is a wasteful number, since it uses less digits than its factorization.

1211145514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364940.

The product of its digits is 800, while the sum is 25.

The square root of 1211145514 is about 34801.5159727274. The cubic root of 1211145514 is about 1065.9384013067.

Adding to 1211145514 its reverse (4155411121), we get a palindrome (5366556635).

The spelling of 1211145514 in words is "one billion, two hundred eleven million, one hundred forty-five thousand, five hundred fourteen".