2121312231301 has 2 divisors, whose sum is σ = 2121312231302. Its totient is φ = 2121312231300.

The previous prime is 2121312231277. The next prime is 2121312231343. The reversal of 2121312231301 is 1031322131212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1495313208900 + 625999022401 = 1222830^2 + 791201^2 .

It is a cyclic number.

It is not a de Polignac number, because 2121312231301 - 2²¹ = 2121310134149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121312232301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060656115650 + 1060656115651.

It is an arithmetic number, because the mean of its divisors is an integer number (1060656115651).

Almost surely, 2^{2121312231301} is an apocalyptic number.

It is an amenable number.

2121312231301 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121312231301 is an equidigital number, since it uses as much as digits as its factorization.

2121312231301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 2121312231301 its reverse (1031322131212), we get a palindrome (3152634362513).

The spelling of 2121312231301 in words is "two trillion, one hundred twenty-one billion, three hundred twelve million, two hundred thirty-one thousand, three hundred one".