1421221321311 has 8 divisors (see below), whose sum is σ = 2067231012864. Its totient is φ = 861346255320.

The previous prime is 1421221321307. The next prime is 1421221321369. The reversal of 1421221321311 is 1131231221241.

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

It is not a de Polignac number, because 1421221321311 - 2² = 1421221321307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421221361311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21533656351 + ... + 21533656416.

It is an arithmetic number, because the mean of its divisors is an integer number (258403876608).

Almost surely, 2^{1421221321311} is an apocalyptic number.

1421221321311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1421221321311 is a deficient number, since it is larger than the sum of its proper divisors (646009691553).

1421221321311 is a wasteful number, since it uses less digits than its factorization.

1421221321311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43067312781.

The product of its digits is 576, while the sum is 24.

Adding to 1421221321311 its reverse (1131231221241), we get a palindrome (2552452542552).

The spelling of 1421221321311 in words is "one trillion, four hundred twenty-one billion, two hundred twenty-one million, three hundred twenty-one thousand, three hundred eleven".