2121130012331 has 8 divisors (see below), whose sum is σ = 2325706005744. Its totient is φ = 1918511684320.

The previous prime is 2121130012283. The next prime is 2121130012363. The reversal of 2121130012331 is 1332100311212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-2121130012331 is a prime.

It is a super-2 number, since 2×2121130012331² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2121130012381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 489414080 + ... + 489418413.

It is an arithmetic number, because the mean of its divisors is an integer number (290713250718).

Almost surely, 2^{2121130012331} is an apocalyptic number.

2121130012331 is a deficient number, since it is larger than the sum of its proper divisors (204575993413).

2121130012331 is a wasteful number, since it uses less digits than its factorization.

2121130012331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978832701.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 2121130012331 its reverse (1332100311212), we get a palindrome (3453230323543).

The spelling of 2121130012331 in words is "two trillion, one hundred twenty-one billion, one hundred thirty million, twelve thousand, three hundred thirty-one".