20001343122122 has 4 divisors (see below), whose sum is σ = 30002014683186. Its totient is φ = 10000671561060.

The previous prime is 20001343122121. The next prime is 20001343122169. The reversal of 20001343122122 is 22122134310002.

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

It can be written as a sum of positive squares in only one way, i.e., 18930426529921 + 1070916592201 = 4350911^2 + 1034851^2 .

It is not an unprimeable number, because it can be changed into a prime (20001343122121) 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 as a sum of consecutive naturals, namely, 5000335780529 + ... + 5000335780532.

Almost surely, 2^{20001343122122} is an apocalyptic number.

20001343122122 is a deficient number, since it is larger than the sum of its proper divisors (10000671561064).

20001343122122 is a wasteful number, since it uses less digits than its factorization.

20001343122122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10000671561063.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 20001343122122 its reverse (22122134310002), we get a palindrome (42123477432124).

The spelling of 20001343122122 in words is "twenty trillion, one billion, three hundred forty-three million, one hundred twenty-two thousand, one hundred twenty-two".