20213324314433 has 4 divisors (see below), whose sum is σ = 20214800076420. Its totient is φ = 20211848552448.

The previous prime is 20213324314429. The next prime is 20213324314441. The reversal of 20213324314433 is 33441342331202.

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 445759193104 + 19767565121329 = 667652^2 + 4446073^2 .

It is a cyclic number.

It is not a de Polignac number, because 20213324314433 - 2² = 20213324314429 is a prime.

It is a super-2 number, since 2×20213324314433² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20213324314393 and 20213324314402.

It is not an unprimeable number, because it can be changed into a prime (20213324514433) 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, 737860448 + ... + 737887841.

It is an arithmetic number, because the mean of its divisors is an integer number (5053700019105).

Almost surely, 2^{20213324314433} is an apocalyptic number.

It is an amenable number.

20213324314433 is a deficient number, since it is larger than the sum of its proper divisors (1475761987).

20213324314433 is a wasteful number, since it uses less digits than its factorization.

20213324314433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1475761986.

The product of its (nonzero) digits is 124416, while the sum is 35.

Adding to 20213324314433 its reverse (33441342331202), we get a palindrome (53654666645635).

The spelling of 20213324314433 in words is "twenty trillion, two hundred thirteen billion, three hundred twenty-four million, three hundred fourteen thousand, four hundred thirty-three".