221201002121222 has 8 divisors (see below), whose sum is σ = 331943724150336. Its totient is φ = 110553094071112.

The previous prime is 221201002121161. The next prime is 221201002121293. The reversal of 221201002121222 is 222121200102122.

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

It is a junction number, because it is equal to n+sod(n) for n = 221201002121194 and 221201002121203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23703488918 + ... + 23703498249.

It is an arithmetic number, because the mean of its divisors is an integer number (41492965518792).

Almost surely, 2^{221201002121222} is an apocalyptic number.

221201002121222 is a deficient number, since it is larger than the sum of its proper divisors (110742722029114).

221201002121222 is a wasteful number, since it uses less digits than its factorization.

221201002121222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47406989502.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 221201002121222 its reverse (222121200102122), we get a palindrome (443322202223344).

The spelling of 221201002121222 in words is "two hundred twenty-one trillion, two hundred one billion, two million, one hundred twenty-one thousand, two hundred twenty-two".