122212022221111 has 16 divisors (see below), whose sum is σ = 123481508842368. Its totient is φ = 120944924100000.

The previous prime is 122212022221099. The next prime is 122212022221141. The reversal of 122212022221111 is 111122220212221.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122212022221111 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 (122212022221141) 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, 895251361 + ... + 895387861.

It is an arithmetic number, because the mean of its divisors is an integer number (7717594302648).

Almost surely, 2^{122212022221111} is an apocalyptic number.

122212022221111 is a deficient number, since it is larger than the sum of its proper divisors (1269486621257).

122212022221111 is a wasteful number, since it uses less digits than its factorization.

122212022221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145182.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 122212022221111 its reverse (111122220212221), we get a palindrome (233334242433332).

The spelling of 122212022221111 in words is "one hundred twenty-two trillion, two hundred twelve billion, twenty-two million, two hundred twenty-one thousand, one hundred eleven".