20122112008 has 8 divisors (see below), whose sum is σ = 37728960030. Its totient is φ = 10061056000.

The previous prime is 20122111993. The next prime is 20122112009. The reversal of 20122112008 is 80021122102.

It can be written as a sum of positive squares in only one way, i.e., 19483134724 + 638977284 = 139582^2 + 25278^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (20122112009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1257631993 + ... + 1257632008.

Almost surely, 2^20122112008 is an apocalyptic number.

It is an amenable number.

20122112008 is a deficient number, since it is larger than the sum of its proper divisors (17606848022).

20122112008 is a wasteful number, since it uses less digits than its factorization.

20122112008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2515264007 (or 2515264003 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

The spelling of 20122112008 in words is "twenty billion, one hundred twenty-two million, one hundred twelve thousand, eight".