20321200143011 has 4 divisors (see below), whose sum is σ = 20321233093224. Its totient is φ = 20321167192800.

The previous prime is 20321200143007. The next prime is 20321200143031. The reversal of 20321200143011 is 11034100212302.

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

It is a cyclic number.

It is not a de Polignac number, because 20321200143011 - 2² = 20321200143007 is a prime.

It is a super-2 number, since 2×20321200143011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20321200143031) 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, 15532025 + ... + 16789466.

It is an arithmetic number, because the mean of its divisors is an integer number (5080308273306).

Almost surely, 2^{20321200143011} is an apocalyptic number.

20321200143011 is a deficient number, since it is larger than the sum of its proper divisors (32950213).

20321200143011 is an equidigital number, since it uses as much as digits as its factorization.

20321200143011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32950212.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 20321200143011 its reverse (11034100212302), we get a palindrome (31355300355313).

The spelling of 20321200143011 in words is "twenty trillion, three hundred twenty-one billion, two hundred million, one hundred forty-three thousand, eleven".