212121025531411 has 2 divisors, whose sum is σ = 212121025531412. Its totient is φ = 212121025531410.

The previous prime is 212121025531367. The next prime is 212121025531523. The reversal of 212121025531411 is 114135520121212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212121025531411 - 2¹³ = 212121025523219 is a prime.

It is a super-3 number, since 3×212121025531411³ (a number of 44 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (212121025561411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106060512765705 + 106060512765706.

It is an arithmetic number, because the mean of its divisors is an integer number (106060512765706).

Almost surely, 2^{212121025531411} is an apocalyptic number.

212121025531411 is a deficient number, since it is larger than the sum of its proper divisors (1).

212121025531411 is an equidigital number, since it uses as much as digits as its factorization.

212121025531411 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4800, while the sum is 31.

Adding to 212121025531411 its reverse (114135520121212), we get a palindrome (326256545652623).

The spelling of 212121025531411 in words is "two hundred twelve trillion, one hundred twenty-one billion, twenty-five million, five hundred thirty-one thousand, four hundred eleven".