2221111211012 has 6 divisors (see below), whose sum is σ = 3886944619278. Its totient is φ = 1110555605504.

The previous prime is 2221111210979. The next prime is 2221111211023. The reversal of 2221111211012 is 2101121111222.

It can be written as a sum of positive squares in only one way, i.e., 2217758337796 + 3352873216 = 1489214^2 + 57904^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277638901373 + ... + 277638901380.

It is an arithmetic number, because the mean of its divisors is an integer number (647824103213).

Almost surely, 2^{2221111211012} is an apocalyptic number.

It is an amenable number.

2221111211012 is a deficient number, since it is larger than the sum of its proper divisors (1665833408266).

2221111211012 is a wasteful number, since it uses less digits than its factorization.

2221111211012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555277802757 (or 555277802755 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 2221111211012 its reverse (2101121111222), we get a palindrome (4322232322234).

The spelling of 2221111211012 in words is "two trillion, two hundred twenty-one billion, one hundred eleven million, two hundred eleven thousand, twelve".