122122221021 has 40 divisors (see below), whose sum is σ = 184823337600. Its totient is φ = 80347438080.

The previous prime is 122122221017. The next prime is 122122221029. The reversal of 122122221021 is 120122221221.

It is a happy number.

It is not a de Polignac number, because 122122221021 - 2² = 122122221017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122122220985 and 122122221003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122122221029) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 27251101 + ... + 27255581.

It is an arithmetic number, because the mean of its divisors is an integer number (4620583440).

Almost surely, 2^122122221021 is an apocalyptic number.

It is an amenable number.

122122221021 is a deficient number, since it is larger than the sum of its proper divisors (62701116579).

122122221021 is an equidigital number, since it uses as much as digits as its factorization.

122122221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8831 (or 8822 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 122122221021 its reverse (120122221221), we get a palindrome (242244442242).

The spelling of 122122221021 in words is "one hundred twenty-two billion, one hundred twenty-two million, two hundred twenty-one thousand, twenty-one".