1223141302021 has 4 divisors (see below), whose sum is σ = 1235251612044. Its totient is φ = 1211030992000.

The previous prime is 1223141302013. The next prime is 1223141302051. The reversal of 1223141302021 is 1202031413221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 733720730625 + 489420571396 = 856575^2 + 699586^2 .

It is a cyclic number.

It is not a de Polignac number, because 1223141302021 - 2³ = 1223141302013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1223141301983 and 1223141302001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223141302051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6055154860 + ... + 6055155061.

It is an arithmetic number, because the mean of its divisors is an integer number (308812903011).

Almost surely, 2^{1223141302021} is an apocalyptic number.

It is an amenable number.

1223141302021 is a deficient number, since it is larger than the sum of its proper divisors (12110310023).

1223141302021 is a wasteful number, since it uses less digits than its factorization.

1223141302021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12110310022.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 1223141302021 its reverse (1202031413221), we get a palindrome (2425172715242).

The spelling of 1223141302021 in words is "one trillion, two hundred twenty-three billion, one hundred forty-one million, three hundred two thousand, twenty-one".