122221211001 has 24 divisors (see below), whose sum is σ = 167586801984. Its totient is φ = 79230450240.

The previous prime is 122221210987. The next prime is 122221211009. The reversal of 122221211001 is 100112122221.

It is not a de Polignac number, because 122221211001 - 2³⁴ = 105041341817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122221211009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7511791 + ... + 7528043.

It is an arithmetic number, because the mean of its divisors is an integer number (6982783416).

Almost surely, 2^122221211001 is an apocalyptic number.

It is an amenable number.

122221211001 is a deficient number, since it is larger than the sum of its proper divisors (45365590983).

122221211001 is a wasteful number, since it uses less digits than its factorization.

122221211001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18161 (or 18124 counting only the distinct ones).

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

Adding to 122221211001 its reverse (100112122221), we get a palindrome (222333333222).

The spelling of 122221211001 in words is "one hundred twenty-two billion, two hundred twenty-one million, two hundred eleven thousand, one".