222022100021 has 8 divisors (see below), whose sum is σ = 223783346688. Its totient is φ = 220261860000.

The previous prime is 222022099967. The next prime is 222022100057. The reversal of 222022100021 is 120001220222.

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 222022100021 - 2²⁶ = 221954991157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222022099969 and 222022100005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222022100081) 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, 194321 + ... + 694121.

It is an arithmetic number, because the mean of its divisors is an integer number (27972918336).

Almost surely, 2^222022100021 is an apocalyptic number.

It is an amenable number.

222022100021 is a deficient number, since it is larger than the sum of its proper divisors (1761246667).

222022100021 is a wasteful number, since it uses less digits than its factorization.

222022100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503323.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 222022100021 its reverse (120001220222), we get a palindrome (342023320243).

The spelling of 222022100021 in words is "two hundred twenty-two billion, twenty-two million, one hundred thousand, twenty-one".