221942010 has 16 divisors (see below), whose sum is σ = 532660896. Its totient is φ = 59184528.

The previous prime is 221942003. The next prime is 221942023. The reversal of 221942010 is 10249122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3699004 + ... + 3699063.

It is an arithmetic number, because the mean of its divisors is an integer number (33291306).

Almost surely, 2^221942010 is an apocalyptic number.

221942010 is an abundant number, since it is smaller than the sum of its proper divisors (310718886).

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

221942010 is a wasteful number, since it uses less digits than its factorization.

221942010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7398077.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 221942010 is about 14897.7182816698. The cubic root of 221942010 is about 605.4521674940.

The spelling of 221942010 in words is "two hundred twenty-one million, nine hundred forty-two thousand, ten".