10001222012 has 12 divisors (see below), whose sum is σ = 17530509360. Its totient is φ = 4992505056.

The previous prime is 10001221991. The next prime is 10001222017. The reversal of 10001222012 is 21022210001.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 10001221984 and 10001222002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001222017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2023712 + ... + 2028647.

It is an arithmetic number, because the mean of its divisors is an integer number (1460875780).

Almost surely, 2^10001222012 is an apocalyptic number.

It is an amenable number.

10001222012 is a deficient number, since it is larger than the sum of its proper divisors (7529287348).

10001222012 is a wasteful number, since it uses less digits than its factorization.

10001222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4052980 (or 4052978 counting only the distinct ones).

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

Adding to 10001222012 its reverse (21022210001), we get a palindrome (31023432013).

The spelling of 10001222012 in words is "ten billion, one million, two hundred twenty-two thousand, twelve".