10001221220122 has 16 divisors (see below), whose sum is σ = 16443196981344. Its totient is φ = 4524464574000.

The previous prime is 10001221220113. The next prime is 10001221220143. The reversal of 10001221220122 is 22102212210001.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 10001221220096 and 10001221220105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1077248829 + ... + 1077258112.

It is an arithmetic number, because the mean of its divisors is an integer number (1027699811334).

Almost surely, 2^{10001221220122} is an apocalyptic number.

10001221220122 is a deficient number, since it is larger than the sum of its proper divisors (6441975761222).

10001221220122 is a wasteful number, since it uses less digits than its factorization.

10001221220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2154507165.

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

Adding to 10001221220122 its reverse (22102212210001), we get a palindrome (32103433430123).

The spelling of 10001221220122 in words is "ten trillion, one billion, two hundred twenty-one million, two hundred twenty thousand, one hundred twenty-two".