221400202 has 8 divisors (see below), whose sum is σ = 342813312. Its totient is φ = 107129100.

The previous prime is 221400199. The next prime is 221400211. The reversal of 221400202 is 202004122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1785424 + ... + 1785547.

It is an arithmetic number, because the mean of its divisors is an integer number (42851664).

Almost surely, 2^221400202 is an apocalyptic number.

221400202 is a deficient number, since it is larger than the sum of its proper divisors (121413110).

221400202 is a wasteful number, since it uses less digits than its factorization.

221400202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3571004.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 221400202 is about 14879.5229090183. The cubic root of 221400202 is about 604.9590865487.

Adding to 221400202 its reverse (202004122), we get a palindrome (423404324).

The spelling of 221400202 in words is "two hundred twenty-one million, four hundred thousand, two hundred two".