12211020201021 has 16 divisors (see below), whose sum is σ = 16337665925568. Its totient is φ = 8112573123200.

The previous prime is 12211020201019. The next prime is 12211020201047. The reversal of 12211020201021 is 12010202011221.

It is a cyclic number.

It is not a de Polignac number, because 12211020201021 - 2¹ = 12211020201019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211020201001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4660470 + ... + 6792791.

It is an arithmetic number, because the mean of its divisors is an integer number (1021104120348).

Almost surely, 2^{12211020201021} is an apocalyptic number.

It is an amenable number.

12211020201021 is a deficient number, since it is larger than the sum of its proper divisors (4126645724547).

12211020201021 is a wasteful number, since it uses less digits than its factorization.

12211020201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11454492.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12211020201021 its reverse (12010202011221), we get a palindrome (24221222212242).

The spelling of 12211020201021 in words is "twelve trillion, two hundred eleven billion, twenty million, two hundred one thousand, twenty-one".