20321103011 has 8 divisors (see below), whose sum is σ = 22171123200. Its totient is φ = 18471524040.

The previous prime is 20321103007. The next prime is 20321103071. The reversal of 20321103011 is 11030112302.

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 20321103011 - 2² = 20321103007 is a prime.

It is a super-2 number, since 2×20321103011² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20321103071) 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, 10031 + ... + 201848.

It is an arithmetic number, because the mean of its divisors is an integer number (2771390400).

Almost surely, 2^20321103011 is an apocalyptic number.

20321103011 is a deficient number, since it is larger than the sum of its proper divisors (1850020189).

20321103011 is a wasteful number, since it uses less digits than its factorization.

20321103011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220609.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 20321103011 its reverse (11030112302), we get a palindrome (31351215313).

The spelling of 20321103011 in words is "twenty billion, three hundred twenty-one million, one hundred three thousand, eleven".