20011229208 has 48 divisors (see below), whose sum is σ = 54806052600. Its totient is φ = 6595459200.

The previous prime is 20011229207. The next prime is 20011229209. The reversal of 20011229208 is 80292211002.

It is an interprime number because it is at equal distance from previous prime (20011229207) and next prime (20011229209).

It is a super-2 number, since 2×20011229208² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011229207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1555018 + ... + 1567833.

Almost surely, 2^20011229208 is an apocalyptic number.

It is an amenable number.

20011229208 is an abundant number, since it is smaller than the sum of its proper divisors (34794823392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20011229208 is a wasteful number, since it uses less digits than its factorization.

20011229208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3122952 (or 3122945 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The spelling of 20011229208 in words is "twenty billion, eleven million, two hundred twenty-nine thousand, two hundred eight".