222250021 has 8 divisors (see below), whose sum is σ = 256374720. Its totient is φ = 188719008.

The previous prime is 222249983. The next prime is 222250069. The reversal of 222250021 is 120052222.

222250021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 222250021 - 2¹¹ = 222247973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222249977 and 222250004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222250421) 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, 147616 + ... + 149113.

It is an arithmetic number, because the mean of its divisors is an integer number (32046840).

Almost surely, 2^222250021 is an apocalyptic number.

It is an amenable number.

222250021 is a deficient number, since it is larger than the sum of its proper divisors (34124699).

222250021 is a wasteful number, since it uses less digits than its factorization.

222250021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296843.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 222250021 is about 14908.0522201930. The cubic root of 222250021 is about 605.7321200901.

The spelling of 222250021 in words is "two hundred twenty-two million, two hundred fifty thousand, twenty-one".