20111201132 has 12 divisors (see below), whose sum is σ = 38394111336. Its totient is φ = 9141455040.

The previous prime is 20111201129. The next prime is 20111201137. The reversal of 20111201132 is 23110211102.

It is not an unprimeable number, because it can be changed into a prime (20111201137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228536333 + ... + 228536420.

It is an arithmetic number, because the mean of its divisors is an integer number (3199509278).

Almost surely, 2^20111201132 is an apocalyptic number.

20111201132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20111201132 is a deficient number, since it is larger than the sum of its proper divisors (18282910204).

20111201132 is a wasteful number, since it uses less digits than its factorization.

20111201132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457072768 (or 457072766 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 20111201132 its reverse (23110211102), we get a palindrome (43221412234).

The spelling of 20111201132 in words is "twenty billion, one hundred eleven million, two hundred one thousand, one hundred thirty-two".