20021012012 has 6 divisors (see below), whose sum is σ = 35036771028. Its totient is φ = 10010506004.

The previous prime is 20021012003. The next prime is 20021012041. The reversal of 20021012012 is 21021012002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20021011984 and 20021012002.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2502626498 + ... + 2502626505.

It is an arithmetic number, because the mean of its divisors is an integer number (5839461838).

Almost surely, 2^20021012012 is an apocalyptic number.

It is an amenable number.

20021012012 is a deficient number, since it is larger than the sum of its proper divisors (15015759016).

20021012012 is a wasteful number, since it uses less digits than its factorization.

20021012012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5005253007 (or 5005253005 counting only the distinct ones).

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

Adding to 20021012012 its reverse (21021012002), we get a palindrome (41042024014).

The spelling of 20021012012 in words is "twenty billion, twenty-one million, twelve thousand, twelve".