12202121221111 has 16 divisors (see below), whose sum is σ = 12286569402880. Its totient is φ = 12117978250560.

The previous prime is 12202121221067. The next prime is 12202121221117. The reversal of 12202121221111 is 11112212120221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12202121221111 - 2¹⁵ = 12202121188343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12202121221117) 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, 746801380 + ... + 746817718.

It is an arithmetic number, because the mean of its divisors is an integer number (767910587680).

Almost surely, 2^{12202121221111} is an apocalyptic number.

12202121221111 is a deficient number, since it is larger than the sum of its proper divisors (84448181769).

12202121221111 is a wasteful number, since it uses less digits than its factorization.

12202121221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25366.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 12202121221111 its reverse (11112212120221), we get a palindrome (23314333341332).

The spelling of 12202121221111 in words is "twelve trillion, two hundred two billion, one hundred twenty-one million, two hundred twenty-one thousand, one hundred eleven".