1211321214 has 24 divisors (see below), whose sum is σ = 2625277512. Its totient is φ = 403658640.

The previous prime is 1211321203. The next prime is 1211321219. The reversal of 1211321214 is 4121231121.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211321219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75897 + ... + 90459.

It is an arithmetic number, because the mean of its divisors is an integer number (109386563).

Almost surely, 2^1211321214 is an apocalyptic number.

1211321214 is an abundant number, since it is smaller than the sum of its proper divisors (1413956298).

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

1211321214 is a wasteful number, since it uses less digits than its factorization.

1211321214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19192 (or 19189 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 1211321214 is about 34804.0401965059. The cubic root of 1211321214 is about 1065.9899437842.

Adding to 1211321214 its reverse (4121231121), we get a palindrome (5332552335).

The spelling of 1211321214 in words is "one billion, two hundred eleven million, three hundred twenty-one thousand, two hundred fourteen".