1221342404414 has 16 divisors (see below), whose sum is σ = 1998613854720. Its totient is φ = 555140761560.

The previous prime is 1221342404413. The next prime is 1221342404431. The reversal of 1221342404414 is 4144042431221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221342404413) 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, 117977 + ... + 1567355.

It is an arithmetic number, because the mean of its divisors is an integer number (124913365920).

Almost surely, 2^{1221342404414} is an apocalyptic number.

1221342404414 is a deficient number, since it is larger than the sum of its proper divisors (777271450306).

1221342404414 is a wasteful number, since it uses less digits than its factorization.

1221342404414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1487695.

The product of its (nonzero) digits is 24576, while the sum is 32.

Adding to 1221342404414 its reverse (4144042431221), we get a palindrome (5365384835635).

The spelling of 1221342404414 in words is "one trillion, two hundred twenty-one billion, three hundred forty-two million, four hundred four thousand, four hundred fourteen".