121001221037 has 2 divisors, whose sum is σ = 121001221038. Its totient is φ = 121001221036.

The previous prime is 121001221021. The next prime is 121001221051. The reversal of 121001221037 is 730122100121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89155390921 + 31845830116 = 298589^2 + 178454^2 .

It is a cyclic number.

It is not a de Polignac number, because 121001221037 - 2⁴ = 121001221021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121001221007) 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, 60500610518 + 60500610519.

It is an arithmetic number, because the mean of its divisors is an integer number (60500610519).

Almost surely, 2^121001221037 is an apocalyptic number.

It is an amenable number.

121001221037 is a deficient number, since it is larger than the sum of its proper divisors (1).

121001221037 is an equidigital number, since it uses as much as digits as its factorization.

121001221037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 20.

Adding to 121001221037 its reverse (730122100121), we get a palindrome (851123321158).

The spelling of 121001221037 in words is "one hundred twenty-one billion, one million, two hundred twenty-one thousand, thirty-seven".