1021344342221 has 8 divisors (see below), whose sum is σ = 1173298609344. Its totient is φ = 870902058240.

The previous prime is 1021344342211. The next prime is 1021344342229. The reversal of 1021344342221 is 1222434431201.

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 1021344342221 - 2⁶ = 1021344342157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021344342229) 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, 377994335 + ... + 377997036.

It is an arithmetic number, because the mean of its divisors is an integer number (146662326168).

Almost surely, 2^{1021344342221} is an apocalyptic number.

It is an amenable number.

1021344342221 is a deficient number, since it is larger than the sum of its proper divisors (151954267123).

1021344342221 is an equidigital number, since it uses as much as digits as its factorization.

1021344342221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755991571.

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 1021344342221 its reverse (1222434431201), we get a palindrome (2243778773422).

The spelling of 1021344342221 in words is "one trillion, twenty-one billion, three hundred forty-four million, three hundred forty-two thousand, two hundred twenty-one".