12201122221012 has 6 divisors (see below), whose sum is σ = 21351963886778. Its totient is φ = 6100561110504.

The previous prime is 12201122220913. The next prime is 12201122221033. The reversal of 12201122221012 is 21012222110221.

12201122221012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 8941559179536 + 3259563041476 = 2990244^2 + 1805426^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1525140277623 + ... + 1525140277630.

Almost surely, 2^{12201122221012} is an apocalyptic number.

It is an amenable number.

12201122221012 is a deficient number, since it is larger than the sum of its proper divisors (9150841665766).

12201122221012 is a wasteful number, since it uses less digits than its factorization.

12201122221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3050280555257 (or 3050280555255 counting only the distinct ones).

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

Adding to 12201122221012 its reverse (21012222110221), we get a palindrome (33213344331233).

The spelling of 12201122221012 in words is "twelve trillion, two hundred one billion, one hundred twenty-two million, two hundred twenty-one thousand, twelve".