1221023214214 has 16 divisors (see below), whose sum is σ = 1894752745200. Its totient is φ = 589440333664.

The previous prime is 1221023214211. The next prime is 1221023214221. The reversal of 1221023214214 is 4124123201221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221023214211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1548129 + ... + 2199715.

It is an arithmetic number, because the mean of its divisors is an integer number (118422046575).

Almost surely, 2^{1221023214214} is an apocalyptic number.

1221023214214 is a deficient number, since it is larger than the sum of its proper divisors (673729530986).

1221023214214 is a wasteful number, since it uses less digits than its factorization.

1221023214214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683927.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 1221023214214 its reverse (4124123201221), we get a palindrome (5345146415435).

The spelling of 1221023214214 in words is "one trillion, two hundred twenty-one billion, twenty-three million, two hundred fourteen thousand, two hundred fourteen".