2012121232 has 20 divisors (see below), whose sum is σ = 4252892976. Its totient is φ = 914600480.

The previous prime is 2012121229. The next prime is 2012121257. The reversal of 2012121232 is 2321212102.

It is a happy number.

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

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, 5716078 + ... + 5716429.

Almost surely, 2^2012121232 is an apocalyptic number.

2012121232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2012121232 is an abundant number, since it is smaller than the sum of its proper divisors (2240771744).

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

2012121232 is a wasteful number, since it uses less digits than its factorization.

2012121232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11432526 (or 11432520 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2012121232 is about 44856.6743305832. The cubic root of 2012121232 is about 1262.4612243360.

Adding to 2012121232 its reverse (2321212102), we get a palindrome (4333333334).

The spelling of 2012121232 in words is "two billion, twelve million, one hundred twenty-one thousand, two hundred thirty-two".