121022020237 has 2 divisors, whose sum is σ = 121022020238. Its totient is φ = 121022020236.

The previous prime is 121022020199. The next prime is 121022020289. The reversal of 121022020237 is 732020220121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70448307241 + 50573712996 = 265421^2 + 224886^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121022020237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121022020837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60511010118 + 60511010119.

It is an arithmetic number, because the mean of its divisors is an integer number (60511010119).

Almost surely, 2^121022020237 is an apocalyptic number.

It is an amenable number.

121022020237 is a deficient number, since it is larger than the sum of its proper divisors (1).

121022020237 is an equidigital number, since it uses as much as digits as its factorization.

121022020237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 22.

Adding to 121022020237 its reverse (732020220121), we get a palindrome (853042240358).

The spelling of 121022020237 in words is "one hundred twenty-one billion, twenty-two million, twenty thousand, two hundred thirty-seven".