121012001213 has 2 divisors, whose sum is σ = 121012001214. Its totient is φ = 121012001212.

The previous prime is 121012001197. The next prime is 121012001237. The reversal of 121012001213 is 312100210121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84409424089 + 36602577124 = 290533^2 + 191318^2 .

It is a cyclic number.

It is not a de Polignac number, because 121012001213 - 2⁴ = 121012001197 is a prime.

It is a super-2 number, since 2×121012001213² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121012001263) 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, 60506000606 + 60506000607.

It is an arithmetic number, because the mean of its divisors is an integer number (60506000607).

Almost surely, 2^121012001213 is an apocalyptic number.

It is an amenable number.

121012001213 is a deficient number, since it is larger than the sum of its proper divisors (1).

121012001213 is an equidigital number, since it uses as much as digits as its factorization.

121012001213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 121012001213 its reverse (312100210121), we get a palindrome (433112211334).

The spelling of 121012001213 in words is "one hundred twenty-one billion, twelve million, one thousand, two hundred thirteen".