122211110021129 has 4 divisors (see below), whose sum is σ = 122211137305860. Its totient is φ = 122211082736400.

The previous prime is 122211110021093. The next prime is 122211110021131. The reversal of 122211110021129 is 921120011112221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 69151249012729 + 53059861008400 = 8315723^2 + 7284220^2 .

It is a cyclic number.

It is not a de Polignac number, because 122211110021129 - 2²⁰ = 122211108972553 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122211110021098 and 122211110021107.

It is not an unprimeable number, because it can be changed into a prime (122211110021629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5169722 + ... + 16466579.

It is an arithmetic number, because the mean of its divisors is an integer number (30552784326465).

Almost surely, 2^{122211110021129} is an apocalyptic number.

It is an amenable number.

122211110021129 is a deficient number, since it is larger than the sum of its proper divisors (27284731).

122211110021129 is an equidigital number, since it uses as much as digits as its factorization.

122211110021129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27284730.

The product of its (nonzero) digits is 288, while the sum is 26.

The spelling of 122211110021129 in words is "one hundred twenty-two trillion, two hundred eleven billion, one hundred ten million, twenty-one thousand, one hundred twenty-nine".