1000012221222 has 48 divisors (see below), whose sum is σ = 2327040988272. Its totient is φ = 285658591680.

The previous prime is 1000012221217. The next prime is 1000012221233. The reversal of 1000012221222 is 2221222100001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1079268 + ... + 1779000.

It is an arithmetic number, because the mean of its divisors is an integer number (48480020589).

Almost surely, 2^{1000012221222} is an apocalyptic number.

1000012221222 is an abundant number, since it is smaller than the sum of its proper divisors (1327028767050).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1000012221222 is a wasteful number, since it uses less digits than its factorization.

1000012221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704613 (or 704606 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1000012221222 its reverse (2221222100001), we get a palindrome (3221234321223).

It can be divided in two parts, 100001 and 2221222, that multiplied together give a palindrome (222124421222).

The spelling of 1000012221222 in words is "one trillion, twelve million, two hundred twenty-one thousand, two hundred twenty-two".