1212212214 has 12 divisors (see below), whose sum is σ = 2626459836. Its totient is φ = 404070732.

The previous prime is 1212212213. The next prime is 1212212219. The reversal of 1212212214 is 4122122121.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 67345123 = 1212212214 / (1 + 2 + 1 + 2 + 2 + 1 + 2 + 2 + 1 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212212213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33672544 + ... + 33672579.

It is an arithmetic number, because the mean of its divisors is an integer number (218871653).

Almost surely, 2^1212212214 is an apocalyptic number.

1212212214 is an abundant number, since it is smaller than the sum of its proper divisors (1414247622).

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

1212212214 is a wasteful number, since it uses less digits than its factorization.

1212212214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67345131 (or 67345128 counting only the distinct ones).

The product of its digits is 128, while the sum is 18.

The square root of 1212212214 is about 34816.8380815949. The cubic root of 1212212214 is about 1066.2512464143.

Adding to 1212212214 its reverse (4122122121), we get a palindrome (5334334335).

It can be divided in two parts, 12122 and 12214, that added together give a square (24336 = 156²).

The spelling of 1212212214 in words is "one billion, two hundred twelve million, two hundred twelve thousand, two hundred fourteen".