2121233013131 has 2 divisors, whose sum is σ = 2121233013132. Its totient is φ = 2121233013130.

The previous prime is 2121233013091. The next prime is 2121233013191. The reversal of 2121233013131 is 1313103321212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2121233013131 is a prime.

It is a super-2 number, since 2×2121233013131² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2121233013097 and 2121233013106.

It is not a weakly prime, because it can be changed into another prime (2121233013191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060616506565 + 1060616506566.

It is an arithmetic number, because the mean of its divisors is an integer number (1060616506566).

Almost surely, 2^{2121233013131} is an apocalyptic number.

2121233013131 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121233013131 is an equidigital number, since it uses as much as digits as its factorization.

2121233013131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 2121233013131 its reverse (1313103321212), we get a palindrome (3434336334343).

The spelling of 2121233013131 in words is "two trillion, one hundred twenty-one billion, two hundred thirty-three million, thirteen thousand, one hundred thirty-one".