20001001222012 has 24 divisors (see below), whose sum is σ = 35183823708656. Its totient is φ = 9948482270208.

The previous prime is 20001001221997. The next prime is 20001001222021. The reversal of 20001001222012 is 21022210010002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20001001221983 and 20001001222001.

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, 42152278 + ... + 42624130.

Almost surely, 2^{20001001222012} is an apocalyptic number.

It is an amenable number.

20001001222012 is a deficient number, since it is larger than the sum of its proper divisors (15182822486644).

20001001222012 is a wasteful number, since it uses less digits than its factorization.

20001001222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526957 (or 526955 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20001001222012 its reverse (21022210010002), we get a palindrome (41023211232014).

The spelling of 20001001222012 in words is "twenty trillion, one billion, one million, two hundred twenty-two thousand, twelve".