20121312312132 has 48 divisors (see below), whose sum is σ = 49753930226112. Its totient is φ = 6307177743360.

The previous prime is 20121312312119. The next prime is 20121312312169. The reversal of 20121312312132 is 23121321312102.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41876353 + ... + 42354120.

It is an arithmetic number, because the mean of its divisors is an integer number (1036540213044).

Almost surely, 2^{20121312312132} is an apocalyptic number.

It is an amenable number.

20121312312132 is an abundant number, since it is smaller than the sum of its proper divisors (29632617913980).

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

20121312312132 is a wasteful number, since it uses less digits than its factorization.

20121312312132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84231668 (or 84231666 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 20121312312132 its reverse (23121321312102), we get a palindrome (43242633624234).

The spelling of 20121312312132 in words is "twenty trillion, one hundred twenty-one billion, three hundred twelve million, three hundred twelve thousand, one hundred thirty-two".