122221102021 has 8 divisors (see below), whose sum is σ = 123870497688. Its totient is φ = 120580320000.

The previous prime is 122221102009. The next prime is 122221102061. The reversal of 122221102021 is 120201122221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 66094753921 + 56126348100 = 257089^2 + 236910^2 .

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-122221102021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122221101986 and 122221102004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122221102061) 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, 2124840 + ... + 2181601.

It is an arithmetic number, because the mean of its divisors is an integer number (15483812211).

Almost surely, 2^122221102021 is an apocalyptic number.

It is an amenable number.

122221102021 is a deficient number, since it is larger than the sum of its proper divisors (1649395667).

122221102021 is a wasteful number, since it uses less digits than its factorization.

122221102021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4306823.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 122221102021 its reverse (120201122221), we get a palindrome (242422224242).

The spelling of 122221102021 in words is "one hundred twenty-two billion, two hundred twenty-one million, one hundred two thousand, twenty-one".