12212211222101 has 16 divisors (see below), whose sum is σ = 13375532125440. Its totient is φ = 11057765824320.

The previous prime is 12212211222067. The next prime is 12212211222103. The reversal of 12212211222101 is 10122211221221.

It is a cyclic number.

It is not a de Polignac number, because 12212211222101 - 2⁶ = 12212211222037 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 (12212211222103) 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, 10493156 + ... + 11598738.

It is an arithmetic number, because the mean of its divisors is an integer number (835970757840).

Almost surely, 2^{12212211222101} is an apocalyptic number.

12212211222101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12212211222101 is a deficient number, since it is larger than the sum of its proper divisors (1163320903339).

12212211222101 is a wasteful number, since it uses less digits than its factorization.

12212211222101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109596.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 12212211222101 its reverse (10122211221221), we get a palindrome (22334422443322).

The spelling of 12212211222101 in words is "twelve trillion, two hundred twelve billion, two hundred eleven million, two hundred twenty-two thousand, one hundred one".