1221342214 has 16 divisors (see below), whose sum is σ = 1843776000. Its totient is φ = 606758400.

The previous prime is 1221342193. The next prime is 1221342217. The reversal of 1221342214 is 4122431221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221342217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 442912 + ... + 445660.

It is an arithmetic number, because the mean of its divisors is an integer number (115236000).

Almost surely, 2^1221342214 is an apocalyptic number.

1221342214 is a deficient number, since it is larger than the sum of its proper divisors (622433786).

1221342214 is a wasteful number, since it uses less digits than its factorization.

1221342214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4095.

The product of its digits is 768, while the sum is 22.

The square root of 1221342214 is about 34947.7068489479. The cubic root of 1221342214 is about 1068.9214432442.

Adding to 1221342214 its reverse (4122431221), we get a palindrome (5343773435).

The spelling of 1221342214 in words is "one billion, two hundred twenty-one million, three hundred forty-two thousand, two hundred fourteen".