221222212211012 has 48 divisors (see below), whose sum is σ = 396822447974400. Its totient is φ = 107878930941600.

The previous prime is 221222212210969. The next prime is 221222212211047. The reversal of 221222212211012 is 210112212222122.

It is a super-2 number, since 2×221222212211012² (a number of 29 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 174545387 + ... + 175808237.

It is an arithmetic number, because the mean of its divisors is an integer number (8267134332800).

Almost surely, 2^{221222212211012} is an apocalyptic number.

It is an amenable number.

221222212211012 is a deficient number, since it is larger than the sum of its proper divisors (175600235763388).

221222212211012 is a wasteful number, since it uses less digits than its factorization.

221222212211012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1269696 (or 1269694 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 221222212211012 its reverse (210112212222122), we get a palindrome (431334424433134).

The spelling of 221222212211012 in words is "two hundred twenty-one trillion, two hundred twenty-two billion, two hundred twelve million, two hundred eleven thousand, twelve".