12022021011 has 96 divisors (see below), whose sum is σ = 21861619200. Its totient is φ = 5705856000.

The previous prime is 12022021009. The next prime is 12022021013. The reversal of 12022021011 is 11012022021.

It is an interprime number because it is at equal distance from previous prime (12022021009) and next prime (12022021013).

It is not a de Polignac number, because 12022021011 - 2¹ = 12022021009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12022021013) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3941415 + ... + 3944463.

It is an arithmetic number, because the mean of its divisors is an integer number (227725200).

Almost surely, 2^12022021011 is an apocalyptic number.

12022021011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12022021011 is a deficient number, since it is larger than the sum of its proper divisors (9839598189).

12022021011 is a wasteful number, since it uses less digits than its factorization.

12022021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3197 (or 3184 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12022021011 its reverse (11012022021), we get a palindrome (23034043032).

The spelling of 12022021011 in words is "twelve billion, twenty-two million, twenty-one thousand, eleven".