221012212012022 has 4 divisors (see below), whose sum is σ = 331518318018036. Its totient is φ = 110506106006010.

The previous prime is 221012212012003. The next prime is 221012212012069. The reversal of 221012212012022 is 220210212210122.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 221012212011985 and 221012212012003.

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 as a sum of consecutive naturals, namely, 55253053003004 + ... + 55253053003007.

It is an arithmetic number, because the mean of its divisors is an integer number (82879579504509).

Almost surely, 2^{221012212012022} is an apocalyptic number.

221012212012022 is a deficient number, since it is larger than the sum of its proper divisors (110506106006014).

221012212012022 is a wasteful number, since it uses less digits than its factorization.

221012212012022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110506106006013.

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

Adding to 221012212012022 its reverse (220210212210122), we get a palindrome (441222424222144).

The spelling of 221012212012022 in words is "two hundred twenty-one trillion, twelve billion, two hundred twelve million, twelve thousand, twenty-two".