10001221022 has 16 divisors (see below), whose sum is σ = 16157489712. Its totient is φ = 4615470720.

The previous prime is 10001221019. The next prime is 10001221081. The reversal of 10001221022 is 22012210001.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 10001220994 and 10001221012.

It is a congruent number.

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, 418973 + ... + 442199.

It is an arithmetic number, because the mean of its divisors is an integer number (1009843107).

Almost surely, 2^10001221022 is an apocalyptic number.

10001221022 is a deficient number, since it is larger than the sum of its proper divisors (6156268690).

10001221022 is a wasteful number, since it uses less digits than its factorization.

10001221022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39803.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 10001221022 its reverse (22012210001), we get a palindrome (32013431023).

The spelling of 10001221022 in words is "ten billion, one million, two hundred twenty-one thousand, twenty-two".