20012210012 has 24 divisors (see below), whose sum is σ = 35457488976. Its totient is φ = 9881595648.

The previous prime is 20012210011. The next prime is 20012210021. The reversal of 20012210012 is 21001221002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20012209975 and 20012210002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012210011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 929918 + ... + 951194.

It is an arithmetic number, because the mean of its divisors is an integer number (1477395374).

Almost surely, 2^20012210012 is an apocalyptic number.

It is an amenable number.

20012210012 is a deficient number, since it is larger than the sum of its proper divisors (15445278964).

20012210012 is a wasteful number, since it uses less digits than its factorization.

20012210012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24197 (or 24195 counting only the distinct ones).

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

Adding to 20012210012 its reverse (21001221002), we get a palindrome (41013431014).

The spelling of 20012210012 in words is "twenty billion, twelve million, two hundred ten thousand, twelve".