221961002 has 16 divisors (see below), whose sum is σ = 359939040. Its totient is φ = 102297168.

The previous prime is 221960989. The next prime is 221961013. The reversal of 221961002 is 200169122.

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, 77528 + ... + 80339.

It is an arithmetic number, because the mean of its divisors is an integer number (22496190).

Almost surely, 2^221961002 is an apocalyptic number.

221961002 is a deficient number, since it is larger than the sum of its proper divisors (137978038).

221961002 is a wasteful number, since it uses less digits than its factorization.

221961002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157925.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 221961002 is about 14898.3556810811. The cubic root of 221961002 is about 605.4694368993.

The spelling of 221961002 in words is "two hundred twenty-one million, nine hundred sixty-one thousand, two".