222102021 has 8 divisors (see below), whose sum is σ = 297441504. Its totient is φ = 147415280.

The previous prime is 222101977. The next prime is 222102031. The reversal of 222102021 is 120201222.

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 222102021 - 2¹³ = 222093829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222101988 and 222102006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222102031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162390 + ... + 163751.

It is an arithmetic number, because the mean of its divisors is an integer number (37180188).

Almost surely, 2^222102021 is an apocalyptic number.

It is an amenable number.

222102021 is a deficient number, since it is larger than the sum of its proper divisors (75339483).

222102021 is a wasteful number, since it uses less digits than its factorization.

222102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326371.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 222102021 is about 14903.0876331048. The cubic root of 222102021 is about 605.5976345226.

Adding to 222102021 its reverse (120201222), we get a palindrome (342303243).

The spelling of 222102021 in words is "two hundred twenty-two million, one hundred two thousand, twenty-one".