12211200022021 has 32 divisors (see below), whose sum is σ = 16397730736128. Its totient is φ = 8782062863040.

The previous prime is 12211200022013. The next prime is 12211200022027. The reversal of 12211200022021 is 12022000211221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12211200022021 - 2³ = 12211200022013 is a prime.

It is a super-2 number, since 2×12211200022021² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12211200021986 and 12211200022004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211200022027) 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, 6408120 + ... + 8092366.

It is an arithmetic number, because the mean of its divisors is an integer number (512429085504).

Almost surely, 2^{12211200022021} is an apocalyptic number.

12211200022021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12211200022021 is a deficient number, since it is larger than the sum of its proper divisors (4186530714107).

12211200022021 is a wasteful number, since it uses less digits than its factorization.

12211200022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1691521.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12211200022021 its reverse (12022000211221), we get a palindrome (24233200233242).

The spelling of 12211200022021 in words is "twelve trillion, two hundred eleven billion, two hundred million, twenty-two thousand, twenty-one".