222021100102021 has 16 divisors (see below), whose sum is σ = 243852858460800. Its totient is φ = 200464261923520.

The previous prime is 222021100101959. The next prime is 222021100102031. The reversal of 222021100102021 is 120201001120222.

It is a happy number.

222021100102021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 222021100102021 - 2¹³ = 222021100093829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222021100101986 and 222021100102004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222021100102031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11547336 + ... + 24028798.

It is an arithmetic number, because the mean of its divisors is an integer number (15240803653800).

Almost surely, 2^{222021100102021} is an apocalyptic number.

It is an amenable number.

222021100102021 is a deficient number, since it is larger than the sum of its proper divisors (21831758358779).

222021100102021 is a wasteful number, since it uses less digits than its factorization.

222021100102021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12492476.

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

Adding to 222021100102021 its reverse (120201001120222), we get a palindrome (342222101222243).

The spelling of 222021100102021 in words is "two hundred twenty-two trillion, twenty-one billion, one hundred million, one hundred two thousand, twenty-one".