221401002 has 16 divisors (see below), whose sum is σ = 443793600. Its totient is φ = 73635072.

The previous prime is 221401001. The next prime is 221401009. The reversal of 221401002 is 200104122.

It is not an unprimeable number, because it can be changed into a prime (221401001) 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, 38398 + ... + 43785.

It is an arithmetic number, because the mean of its divisors is an integer number (27737100).

Almost surely, 2^221401002 is an apocalyptic number.

221401002 is an abundant number, since it is smaller than the sum of its proper divisors (222392598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221401002 is a wasteful number, since it uses less digits than its factorization.

221401002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82637.

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

The square root of 221401002 is about 14879.5497915764. The cubic root of 221401002 is about 604.9598151940.

Adding to 221401002 its reverse (200104122), we get a palindrome (421505124).

The spelling of 221401002 in words is "two hundred twenty-one million, four hundred one thousand, two".