221002222120202 has 8 divisors (see below), whose sum is σ = 331509411401412. Its totient is φ = 110499084986400.

The previous prime is 221002222120189. The next prime is 221002222120217. The reversal of 221002222120202 is 202021222200122.

It can be written as a sum of positive squares in 2 ways, for example, as 176829064648681 + 44173157471521 = 13297709^2 + 6646289^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1012900499 + ... + 1013118662.

Almost surely, 2^{221002222120202} is an apocalyptic number.

221002222120202 is a deficient number, since it is larger than the sum of its proper divisors (110507189281210).

221002222120202 is a wasteful number, since it uses less digits than its factorization.

221002222120202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2026073704.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 221002222120202 its reverse (202021222200122), we get a palindrome (423023444320324).

The spelling of 221002222120202 in words is "two hundred twenty-one trillion, two billion, two hundred twenty-two million, one hundred twenty thousand, two hundred two".