1021343114421 has 72 divisors (see below), whose sum is σ = 1806824167200. Its totient is φ = 552795243840.

The previous prime is 1021343114417. The next prime is 1021343114423. The reversal of 1021343114421 is 1244113431201.

It is a happy number.

1021343114421 is a `hidden beast` number, since 1 + 0 + 213 + 4 + 3 + 1 + 1 + 442 + 1 = 666.

It is not a de Polignac number, because 1021343114421 - 2² = 1021343114417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021343114423) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 56792251 + ... + 56810231.

It is an arithmetic number, because the mean of its divisors is an integer number (25094780100).

Almost surely, 2^{1021343114421} is an apocalyptic number.

It is an amenable number.

1021343114421 is a deficient number, since it is larger than the sum of its proper divisors (785481052779).

1021343114421 is a wasteful number, since it uses less digits than its factorization.

1021343114421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24799 (or 24789 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 1021343114421 its reverse (1244113431201), we get a palindrome (2265456545622).

The spelling of 1021343114421 in words is "one trillion, twenty-one billion, three hundred forty-three million, one hundred fourteen thousand, four hundred twenty-one".