20211103011 has 32 divisors (see below), whose sum is σ = 29611346688. Its totient is φ = 12160419840.

The previous prime is 20211103009. The next prime is 20211103037. The reversal of 20211103011 is 11030111202.

It is not a de Polignac number, because 20211103011 - 2¹ = 20211103009 is a prime.

It is a super-2 number, since 2×20211103011² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20211103711) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6975115 + ... + 6978011.

It is an arithmetic number, because the mean of its divisors is an integer number (925354584).

Almost surely, 2^20211103011 is an apocalyptic number.

20211103011 is a deficient number, since it is larger than the sum of its proper divisors (9400243677).

20211103011 is a wasteful number, since it uses less digits than its factorization.

20211103011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4371.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 20211103011 its reverse (11030111202), we get a palindrome (31241214213).

The spelling of 20211103011 in words is "twenty billion, two hundred eleven million, one hundred three thousand, eleven".