12021131103 has 32 divisors (see below), whose sum is σ = 17346389760. Its totient is φ = 7377231360.

The previous prime is 12021131081. The next prime is 12021131119. The reversal of 12021131103 is 30113112021.

It is a happy number.

It is not a de Polignac number, because 12021131103 - 2⁶ = 12021131039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021131303) 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, 546076 + ... + 567662.

It is an arithmetic number, because the mean of its divisors is an integer number (542074680).

Almost surely, 2^12021131103 is an apocalyptic number.

12021131103 is a deficient number, since it is larger than the sum of its proper divisors (5325258657).

12021131103 is a wasteful number, since it uses less digits than its factorization.

12021131103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21847.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 12021131103 its reverse (30113112021), we get a palindrome (42134243124).

The spelling of 12021131103 in words is "twelve billion, twenty-one million, one hundred thirty-one thousand, one hundred three".