2221021200122 has 16 divisors (see below), whose sum is σ = 3507829532640. Its totient is φ = 1051776487728.

The previous prime is 2221021200091. The next prime is 2221021200133. The reversal of 2221021200122 is 2210021201222.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2221021200122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7808048 + ... + 8087499.

It is an arithmetic number, because the mean of its divisors is an integer number (219239345790).

Almost surely, 2^{2221021200122} is an apocalyptic number.

2221021200122 is a deficient number, since it is larger than the sum of its proper divisors (1286808332518).

2221021200122 is a wasteful number, since it uses less digits than its factorization.

2221021200122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15899245.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2221021200122 its reverse (2210021201222), we get a palindrome (4431042401344).

The spelling of 2221021200122 in words is "two trillion, two hundred twenty-one billion, twenty-one million, two hundred thousand, one hundred twenty-two".