20121132112 has 20 divisors (see below), whose sum is σ = 39068186976. Its totient is φ = 10039019360.

The previous prime is 20121132013. The next prime is 20121132121. The reversal of 20121132112 is 21123112102.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1338964 + ... + 1353907.

Almost surely, 2^20121132112 is an apocalyptic number.

It is an amenable number.

20121132112 is a deficient number, since it is larger than the sum of its proper divisors (18947054864).

20121132112 is a wasteful number, since it uses less digits than its factorization.

20121132112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2693346 (or 2693340 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 20121132112 its reverse (21123112102), we get a palindrome (41244244214).

The spelling of 20121132112 in words is "twenty billion, one hundred twenty-one million, one hundred thirty-two thousand, one hundred twelve".