221002310402240 has 28 divisors (see below), whose sum is σ = 526261751646096. Its totient is φ = 88400924160768.

The previous prime is 221002310402173. The next prime is 221002310402257. The reversal of 221002310402240 is 42204013200122.

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, 345316109684 + ... + 345316110323.

Almost surely, 2^{221002310402240} is an apocalyptic number.

221002310402240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221002310402240 is an abundant number, since it is smaller than the sum of its proper divisors (305259441243856).

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

221002310402240 is an equidigital number, since it uses as much as digits as its factorization.

221002310402240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690632220024 (or 690632220014 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 221002310402240 its reverse (42204013200122), we get a palindrome (263206323602362).

The spelling of 221002310402240 in words is "two hundred twenty-one trillion, two billion, three hundred ten million, four hundred two thousand, two hundred forty".