221454102 has 16 divisors (see below), whose sum is σ = 454879152. Its totient is φ = 71822880.

The previous prime is 221454031. The next prime is 221454109. The reversal of 221454102 is 201454122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221454109) 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, 498549 + ... + 498992.

It is an arithmetic number, because the mean of its divisors is an integer number (28429947).

Almost surely, 2^221454102 is an apocalyptic number.

221454102 is an abundant number, since it is smaller than the sum of its proper divisors (233425050).

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

221454102 is a wasteful number, since it uses less digits than its factorization.

221454102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997583.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 221454102 is about 14881.3340127826. The cubic root of 221454102 is about 605.0081751053.

The spelling of 221454102 in words is "two hundred twenty-one million, four hundred fifty-four thousand, one hundred two".