221400104502 has 8 divisors (see below), whose sum is σ = 442800209016. Its totient is φ = 73800034832.

The previous prime is 221400104491. The next prime is 221400104531. The reversal of 221400104502 is 205401004122.

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

221400104502 is an admirable number.

It is a congruent number.

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, 18450008703 + ... + 18450008714.

It is an arithmetic number, because the mean of its divisors is an integer number (55350026127).

Almost surely, 2^221400104502 is an apocalyptic number.

221400104502 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

221400104502 is a wasteful number, since it uses less digits than its factorization.

221400104502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36900017422.

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

Adding to 221400104502 its reverse (205401004122), we get a palindrome (426801108624).

The spelling of 221400104502 in words is "two hundred twenty-one billion, four hundred million, one hundred four thousand, five hundred two".