121202011001 has 2 divisors, whose sum is σ = 121202011002. Its totient is φ = 121202011000.

The previous prime is 121202010997. The next prime is 121202011027. The reversal of 121202011001 is 100110202121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95385234025 + 25816776976 = 308845^2 + 160676^2 .

It is a cyclic number.

It is not a de Polignac number, because 121202011001 - 2² = 121202010997 is a prime.

It is not a weakly prime, because it can be changed into another prime (121202011031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60601005500 + 60601005501.

It is an arithmetic number, because the mean of its divisors is an integer number (60601005501).

Almost surely, 2^121202011001 is an apocalyptic number.

It is an amenable number.

121202011001 is a deficient number, since it is larger than the sum of its proper divisors (1).

121202011001 is an equidigital number, since it uses as much as digits as its factorization.

121202011001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121202011001 its reverse (100110202121), we get a palindrome (221312213122).

The spelling of 121202011001 in words is "one hundred twenty-one billion, two hundred two million, eleven thousand, one".