20013311012 has 6 divisors (see below), whose sum is σ = 35023294278. Its totient is φ = 10006655504.

The previous prime is 20013310981. The next prime is 20013311023. The reversal of 20013311012 is 21011331002.

It can be written as a sum of positive squares in only one way, i.e., 19932921856 + 80389156 = 141184^2 + 8966^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2501663873 + ... + 2501663880.

It is an arithmetic number, because the mean of its divisors is an integer number (5837215713).

Almost surely, 2^20013311012 is an apocalyptic number.

It is an amenable number.

20013311012 is a deficient number, since it is larger than the sum of its proper divisors (15009983266).

20013311012 is a wasteful number, since it uses less digits than its factorization.

20013311012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5003327757 (or 5003327755 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 20013311012 its reverse (21011331002), we get a palindrome (41024642014).

The spelling of 20013311012 in words is "twenty billion, thirteen million, three hundred eleven thousand, twelve".