121000201213 has 2 divisors, whose sum is σ = 121000201214. Its totient is φ = 121000201212.

The previous prime is 121000201193. The next prime is 121000201229. The reversal of 121000201213 is 312102000121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110437911684 + 10562289529 = 332322^2 + 102773^2 .

It is a cyclic number.

It is not a de Polignac number, because 121000201213 - 2¹⁷ = 121000070141 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121000201193 and 121000201202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121000201513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60500100606 + 60500100607.

It is an arithmetic number, because the mean of its divisors is an integer number (60500100607).

Almost surely, 2^121000201213 is an apocalyptic number.

It is an amenable number.

121000201213 is a deficient number, since it is larger than the sum of its proper divisors (1).

121000201213 is an equidigital number, since it uses as much as digits as its factorization.

121000201213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 121000201213 its reverse (312102000121), we get a palindrome (433102201334).

The spelling of 121000201213 in words is "one hundred twenty-one billion, two hundred one thousand, two hundred thirteen".