22101221020122 has 32 divisors (see below), whose sum is σ = 49114161230400. Its totient is φ = 7367023162224.

The previous prime is 22101221020093. The next prime is 22101221020129. The reversal of 22101221020122 is 22102012210122.

It is a happy number.

22101221020122 is a `hidden beast` number, since 221 + 0 + 1 + 221 + 0 + 201 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22101221020095 and 22101221020104.

It is not an unprimeable number, because it can be changed into a prime (22101221020129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7008388 + ... + 9660224.

It is an arithmetic number, because the mean of its divisors is an integer number (1534817538450).

Almost surely, 2^{22101221020122} is an apocalyptic number.

22101221020122 is an abundant number, since it is smaller than the sum of its proper divisors (27012940210278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22101221020122 is a wasteful number, since it uses less digits than its factorization.

22101221020122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2806187 (or 2806181 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 22101221020122 its reverse (22102012210122), we get a palindrome (44203233230244).

The spelling of 22101221020122 in words is "twenty-two trillion, one hundred one billion, two hundred twenty-one million, twenty thousand, one hundred twenty-two".