20121232302 has 16 divisors (see below), whose sum is σ = 44713849680. Its totient is φ = 6707077416.

The previous prime is 20121232291. The next prime is 20121232331. The reversal of 20121232302 is 20323212102.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186307653 + ... + 186307760.

It is an arithmetic number, because the mean of its divisors is an integer number (2794615605).

Almost surely, 2^20121232302 is an apocalyptic number.

20121232302 is an abundant number, since it is smaller than the sum of its proper divisors (24592617378).

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

20121232302 is a wasteful number, since it uses less digits than its factorization.

20121232302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372615424 (or 372615418 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20121232302 its reverse (20323212102), we get a palindrome (40444444404).

The spelling of 20121232302 in words is "twenty billion, one hundred twenty-one million, two hundred thirty-two thousand, three hundred two".