12202121211 has 16 divisors (see below), whose sum is σ = 18595865088. Its totient is φ = 6971832000.

The previous prime is 12202121209. The next prime is 12202121231. The reversal of 12202121211 is 11212120221.

It is not a de Polignac number, because 12202121211 - 2¹ = 12202121209 is a prime.

It is a super-2 number, since 2×12202121211² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12202121201) 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, 184551 + ... + 241791.

It is an arithmetic number, because the mean of its divisors is an integer number (1162241568).

Almost surely, 2^12202121211 is an apocalyptic number.

12202121211 is a deficient number, since it is larger than the sum of its proper divisors (6393743877).

12202121211 is a wasteful number, since it uses less digits than its factorization.

12202121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67402.

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

Adding to 12202121211 its reverse (11212120221), we get a palindrome (23414241432).

The spelling of 12202121211 in words is "twelve billion, two hundred two million, one hundred twenty-one thousand, two hundred eleven".