220122212012021 has 8 divisors (see below), whose sum is σ = 240133514026944. Its totient is φ = 200110941969120.

The previous prime is 220122212011967. The next prime is 220122212012051. The reversal of 220122212012021 is 120210212221022.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220122212012021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220122212011984 and 220122212012002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220122212012051) 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, 7750880 + ... + 22367846.

It is an arithmetic number, because the mean of its divisors is an integer number (30016689253368).

Almost surely, 2^{220122212012021} is an apocalyptic number.

It is an amenable number.

220122212012021 is a deficient number, since it is larger than the sum of its proper divisors (20011302014923).

220122212012021 is a wasteful number, since it uses less digits than its factorization.

220122212012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15986011.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 220122212012021 its reverse (120210212221022), we get a palindrome (340332424233043).

The spelling of 220122212012021 in words is "two hundred twenty trillion, one hundred twenty-two billion, two hundred twelve million, twelve thousand, twenty-one".