122120011221 has 16 divisors (see below), whose sum is σ = 175455236544. Its totient is φ = 75106450944.

The previous prime is 122120011213. The next prime is 122120011243. The reversal of 122120011221 is 122110021221.

It is not a de Polignac number, because 122120011221 - 2³ = 122120011213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122120011221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122120011621) 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, 856411 + ... + 988776.

It is an arithmetic number, because the mean of its divisors is an integer number (10965952284).

Almost surely, 2^122120011221 is an apocalyptic number.

It is an amenable number.

122120011221 is a deficient number, since it is larger than the sum of its proper divisors (53335225323).

122120011221 is a wasteful number, since it uses less digits than its factorization.

122120011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1846900.

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

Adding to 122120011221 its reverse (122110021221), we get a palindrome (244230032442).

The spelling of 122120011221 in words is "one hundred twenty-two billion, one hundred twenty million, eleven thousand, two hundred twenty-one".