221202220222012 has 24 divisors (see below), whose sum is σ = 407600177014800. Its totient is φ = 104748524015616.

The previous prime is 221202220222007. The next prime is 221202220222063. The reversal of 221202220222012 is 210222022202122.

It is a super-2 number, since 2×221202220222012² (a number of 29 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 436898623 + ... + 437404630.

It is an arithmetic number, because the mean of its divisors is an integer number (16983340708950).

Almost surely, 2^{221202220222012} is an apocalyptic number.

It is an amenable number.

221202220222012 is a deficient number, since it is larger than the sum of its proper divisors (186397956792788).

221202220222012 is a wasteful number, since it uses less digits than its factorization.

221202220222012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874306605 (or 874306603 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 221202220222012 its reverse (210222022202122), we get a palindrome (431424242424134).

The spelling of 221202220222012 in words is "two hundred twenty-one trillion, two hundred two billion, two hundred twenty million, two hundred twenty-two thousand, twelve".