221311042220202 has 32 divisors (see below), whose sum is σ = 482863515261120. Its totient is φ = 67063527256320.

The previous prime is 221311042220167. The next prime is 221311042220249. The reversal of 221311042220202 is 202022240113122.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48927 + ... + 21038642.

It is an arithmetic number, because the mean of its divisors is an integer number (15089484851910).

Almost surely, 2^{221311042220202} is an apocalyptic number.

221311042220202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221311042220202 is an abundant number, since it is smaller than the sum of its proper divisors (261552473040918).

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

221311042220202 is a wasteful number, since it uses less digits than its factorization.

221311042220202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21246598.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 221311042220202 its reverse (202022240113122), we get a palindrome (423333282333324).

The spelling of 221311042220202 in words is "two hundred twenty-one trillion, three hundred eleven billion, forty-two million, two hundred twenty thousand, two hundred two".