20111220032 has 28 divisors (see below), whose sum is σ = 39925142400. Its totient is φ = 10051341696.

The previous prime is 20111220007. The next prime is 20111220061. The reversal of 20111220032 is 23002211102.

It is a happy number.

It is a super-2 number, since 2×20111220032² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20111219989 and 20111220016.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88043 + ... + 219029.

Almost surely, 2^20111220032 is an apocalyptic number.

It is an amenable number.

20111220032 is a deficient number, since it is larger than the sum of its proper divisors (19813922368).

20111220032 is a wasteful number, since it uses less digits than its factorization.

20111220032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133398 (or 133388 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20111220032 its reverse (23002211102), we get a palindrome (43113431134).

The spelling of 20111220032 in words is "twenty billion, one hundred eleven million, two hundred twenty thousand, thirty-two".