221212314343102 has 64 divisors (see below), whose sum is σ = 363690509414400. Its totient is φ = 100458922636800.

The previous prime is 221212314343079. The next prime is 221212314343117. The reversal of 221212314343102 is 201343413212122.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

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, 588457399 + ... + 588833197.

It is an arithmetic number, because the mean of its divisors is an integer number (5682664209600).

Almost surely, 2^{221212314343102} is an apocalyptic number.

221212314343102 is a deficient number, since it is larger than the sum of its proper divisors (142478195071298).

221212314343102 is a wasteful number, since it uses less digits than its factorization.

221212314343102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377417.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 221212314343102 its reverse (201343413212122), we get a palindrome (422555727555224).

The spelling of 221212314343102 in words is "two hundred twenty-one trillion, two hundred twelve billion, three hundred fourteen million, three hundred forty-three thousand, one hundred two".