221301220402 has 8 divisors (see below), whose sum is σ = 332010631296. Its totient is φ = 110631009972.

The previous prime is 221301220373. The next prime is 221301220411. The reversal of 221301220402 is 204022103122.

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

It is a self number, because there is not a number n which added to its sum of digits gives 221301220402.

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, 9785998 + ... + 9808585.

It is an arithmetic number, because the mean of its divisors is an integer number (41501328912).

Almost surely, 2^221301220402 is an apocalyptic number.

221301220402 is a deficient number, since it is larger than the sum of its proper divisors (110709410894).

221301220402 is a wasteful number, since it uses less digits than its factorization.

221301220402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19600232.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 221301220402 its reverse (204022103122), we get a palindrome (425323323524).

The spelling of 221301220402 in words is "two hundred twenty-one billion, three hundred one million, two hundred twenty thousand, four hundred two".