2121132110131 has 4 divisors (see below), whose sum is σ = 2125487618032. Its totient is φ = 2116776602232.

The previous prime is 2121132110113. The next prime is 2121132110179. The reversal of 2121132110131 is 1310112311212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2121132110131 - 2⁹ = 2121132109619 is a prime.

It is a super-2 number, since 2×2121132110131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2121132110099 and 2121132110108.

It is not an unprimeable number, because it can be changed into a prime (2121132120131) 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, 2177753220 + ... + 2177754193.

It is an arithmetic number, because the mean of its divisors is an integer number (531371904508).

Almost surely, 2^{2121132110131} is an apocalyptic number.

2121132110131 is a deficient number, since it is larger than the sum of its proper divisors (4355507901).

2121132110131 is an equidigital number, since it uses as much as digits as its factorization.

2121132110131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4355507900.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 2121132110131 its reverse (1310112311212), we get a palindrome (3431244421343).

The spelling of 2121132110131 in words is "two trillion, one hundred twenty-one billion, one hundred thirty-two million, one hundred ten thousand, one hundred thirty-one".