2131212013432 has 16 divisors (see below), whose sum is σ = 4081044281760. Its totient is φ = 1042933538304.

The previous prime is 2131212013429. The next prime is 2131212013433. The reversal of 2131212013432 is 2343102121312.

It is a junction number, because it is equal to n+sod(n) for n = 2131212013397 and 2131212013406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131212013433) 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, 2834058153 + ... + 2834058904.

It is an arithmetic number, because the mean of its divisors is an integer number (255065267610).

Almost surely, 2^{2131212013432} is an apocalyptic number.

It is an amenable number.

2131212013432 is a deficient number, since it is larger than the sum of its proper divisors (1949832268328).

2131212013432 is a wasteful number, since it uses less digits than its factorization.

2131212013432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5668117110 (or 5668117106 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 2131212013432 its reverse (2343102121312), we get a palindrome (4474314134744).

The spelling of 2131212013432 in words is "two trillion, one hundred thirty-one billion, two hundred twelve million, thirteen thousand, four hundred thirty-two".