1213511214 has 16 divisors (see below), whose sum is σ = 2472815952. Its totient is φ = 396871488.

The previous prime is 1213511191. The next prime is 1213511219. The reversal of 1213511214 is 4121153121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213511219) 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, 1907719 + ... + 1908354.

It is an arithmetic number, because the mean of its divisors is an integer number (154550997).

Almost surely, 2^1213511214 is an apocalyptic number.

1213511214 is an abundant number, since it is smaller than the sum of its proper divisors (1259304738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213511214 is a wasteful number, since it uses less digits than its factorization.

1213511214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3816131.

The product of its digits is 240, while the sum is 21.

The square root of 1213511214 is about 34835.4878536242. The cubic root of 1213511214 is about 1066.6319734593.

Adding to 1213511214 its reverse (4121153121), we get a palindrome (5334664335).

The spelling of 1213511214 in words is "one billion, two hundred thirteen million, five hundred eleven thousand, two hundred fourteen".