1221334410423 has 8 divisors (see below), whose sum is σ = 1628489133936. Its totient is φ = 814201313600.

The previous prime is 1221334410409. The next prime is 1221334410449. The reversal of 1221334410423 is 3240144331221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1221334410423 - 2¹³ = 1221334402231 is a prime.

It is a super-2 number, since 2×1221334410423² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221334430423) 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, 5274438 + ... + 5501123.

It is an arithmetic number, because the mean of its divisors is an integer number (203561141742).

Almost surely, 2^{1221334410423} is an apocalyptic number.

1221334410423 is a deficient number, since it is larger than the sum of its proper divisors (407154723513).

1221334410423 is a wasteful number, since it uses less digits than its factorization.

1221334410423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10813345.

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 1221334410423 its reverse (3240144331221), we get a palindrome (4461478741644).

The spelling of 1221334410423 in words is "one trillion, two hundred twenty-one billion, three hundred thirty-four million, four hundred ten thousand, four hundred twenty-three".