221002022211112 has 8 divisors (see below), whose sum is σ = 414378791645850. Its totient is φ = 110501011105552.

The previous prime is 221002022211037. The next prime is 221002022211133. The reversal of 221002022211112 is 211112220200122.

It can be written as a sum of positive squares in only one way, i.e., 220686890425156 + 315131785956 = 14855534^2 + 561366^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 221002022211112.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13812626388187 + ... + 13812626388202.

Almost surely, 2^{221002022211112} is an apocalyptic number.

It is an amenable number.

221002022211112 is a deficient number, since it is larger than the sum of its proper divisors (193376769434738).

221002022211112 is a wasteful number, since it uses less digits than its factorization.

221002022211112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27625252776395 (or 27625252776391 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221002022211112 its reverse (211112220200122), we get a palindrome (432114242411234).

The spelling of 221002022211112 in words is "two hundred twenty-one trillion, two billion, twenty-two million, two hundred eleven thousand, one hundred twelve".