221212303444132 has 96 divisors (see below), whose sum is σ = 527092293095424. Its totient is φ = 78436352937600.

The previous prime is 221212303444109. The next prime is 221212303444199. The reversal of 221212303444132 is 231444303212122.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 388784928 + ... + 389353495.

It is an arithmetic number, because the mean of its divisors is an integer number (5490544719744).

Almost surely, 2^{221212303444132} is an apocalyptic number.

221212303444132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221212303444132 is an abundant number, since it is smaller than the sum of its proper divisors (305879989651292).

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

221212303444132 is a wasteful number, since it uses less digits than its factorization.

221212303444132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778138529 (or 778138527 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 34.

Adding to 221212303444132 its reverse (231444303212122), we get a palindrome (452656606656254).

The spelling of 221212303444132 in words is "two hundred twenty-one trillion, two hundred twelve billion, three hundred three million, four hundred forty-four thousand, one hundred thirty-two".