20001022012 has 12 divisors (see below), whose sum is σ = 35204112216. Its totient is φ = 9942704240.

The previous prime is 20001021961. The next prime is 20001022043. The reversal of 20001022012 is 21022010002.

It is a self number, because there is not a number n which added to its sum of digits gives 20001022012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14450914 + ... + 14452297.

It is an arithmetic number, because the mean of its divisors is an integer number (2933676018).

Almost surely, 2^20001022012 is an apocalyptic number.

It is an amenable number.

20001022012 is a deficient number, since it is larger than the sum of its proper divisors (15203090204).

20001022012 is a wasteful number, since it uses less digits than its factorization.

20001022012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28903388 (or 28903386 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 20001022012 its reverse (21022010002), we get a palindrome (41023032014).

The spelling of 20001022012 in words is "twenty billion, one million, twenty-two thousand, twelve".