122220121012111 has 16 divisors (see below), whose sum is σ = 125607820117248. Its totient is φ = 118851830323200.

The previous prime is 122220121012103. The next prime is 122220121012147. The reversal of 122220121012111 is 111210121022221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 122220121012111 - 2³ = 122220121012103 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 (122220121012151) 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, 249241410 + ... + 249731296.

It is an arithmetic number, because the mean of its divisors is an integer number (7850488757328).

Almost surely, 2^{122220121012111} is an apocalyptic number.

122220121012111 is a deficient number, since it is larger than the sum of its proper divisors (3387699105137).

122220121012111 is a wasteful number, since it uses less digits than its factorization.

122220121012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509682.

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

Adding to 122220121012111 its reverse (111210121022221), we get a palindrome (233430242034332).

The spelling of 122220121012111 in words is "one hundred twenty-two trillion, two hundred twenty billion, one hundred twenty-one million, twelve thousand, one hundred eleven".