12022011021 has 16 divisors (see below), whose sum is σ = 16484243328. Its totient is φ = 7788748800.

The previous prime is 12022011019. The next prime is 12022011031. The reversal of 12022011021 is 12011022021.

It is not a de Polignac number, because 12022011021 - 2¹ = 12022011019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12022010988 and 12022011006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12022011031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158545 + ... + 221766.

It is an arithmetic number, because the mean of its divisors is an integer number (1030265208).

Almost surely, 2^12022011021 is an apocalyptic number.

It is an amenable number.

12022011021 is a deficient number, since it is larger than the sum of its proper divisors (4462232307).

12022011021 is a wasteful number, since it uses less digits than its factorization.

12022011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380612.

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

Adding to 12022011021 its reverse (12011022021), we get a palindrome (24033033042).

It can be divided in two parts, 1202201 and 1021, that multiplied together give a palindrome (1227447221).

The spelling of 12022011021 in words is "twelve billion, twenty-two million, eleven thousand, twenty-one".