220122100021 has 8 divisors (see below), whose sum is σ = 220236952320. Its totient is φ = 220007285808.

The previous prime is 220122099997. The next prime is 220122100043. The reversal of 220122100021 is 120001221022.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220122100021 - 2⁷ = 220122099893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220122099974 and 220122100010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220122100061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24434500 + ... + 24443506.

It is an arithmetic number, because the mean of its divisors is an integer number (27529619040).

Almost surely, 2^220122100021 is an apocalyptic number.

It is an amenable number.

220122100021 is a deficient number, since it is larger than the sum of its proper divisors (114852299).

220122100021 is an equidigital number, since it uses as much as digits as its factorization.

220122100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19043.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 220122100021 its reverse (120001221022), we get a palindrome (340123321043).

The spelling of 220122100021 in words is "two hundred twenty billion, one hundred twenty-two million, one hundred thousand, twenty-one".