2221120021012 has 6 divisors (see below), whose sum is σ = 3886960036778. Its totient is φ = 1110560010504.

The previous prime is 2221120021007. The next prime is 2221120021033. The reversal of 2221120021012 is 2101200211222.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2182604388496 + 38515632516 = 1477364^2 + 196254^2 .

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, 277640002623 + ... + 277640002630.

Almost surely, 2^{2221120021012} is an apocalyptic number.

It is an amenable number.

2221120021012 is a deficient number, since it is larger than the sum of its proper divisors (1665840015766).

2221120021012 is a wasteful number, since it uses less digits than its factorization.

2221120021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555280005257 (or 555280005255 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2221120021012 its reverse (2101200211222), we get a palindrome (4322320232234).

The spelling of 2221120021012 in words is "two trillion, two hundred twenty-one billion, one hundred twenty million, twenty-one thousand, twelve".