2121122133131 has 8 divisors (see below), whose sum is σ = 2124895703664. Its totient is φ = 2117350010880.

The previous prime is 2121122133107. The next prime is 2121122133161. The reversal of 2121122133131 is 1313312211212.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2121122133131 is a prime.

It is a super-2 number, since 2×2121122133131² (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 = 2121122133097 and 2121122133106.

It is not an unprimeable number, because it can be changed into a prime (2121122133161) 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, 2591075 + ... + 3309971.

It is an arithmetic number, because the mean of its divisors is an integer number (265611962958).

Almost surely, 2^{2121122133131} is an apocalyptic number.

2121122133131 is a deficient number, since it is larger than the sum of its proper divisors (3773570533).

2121122133131 is an equidigital number, since it uses as much as digits as its factorization.

2121122133131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724141.

The product of its digits is 432, while the sum is 23.

Adding to 2121122133131 its reverse (1313312211212), we get a palindrome (3434434344343).

The spelling of 2121122133131 in words is "two trillion, one hundred twenty-one billion, one hundred twenty-two million, one hundred thirty-three thousand, one hundred thirty-one".