202311121601 has 2 divisors, whose sum is σ = 202311121602. Its totient is φ = 202311121600.

The previous prime is 202311121591. The next prime is 202311121657. The reversal of 202311121601 is 106121113202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 164965945600 + 37345176001 = 406160^2 + 193249^2 .

It is a cyclic number.

It is not a de Polignac number, because 202311121601 - 2³⁴ = 185131252417 is a prime.

It is not a weakly prime, because it can be changed into another prime (202311121681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101155560800 + 101155560801.

It is an arithmetic number, because the mean of its divisors is an integer number (101155560801).

Almost surely, 2^202311121601 is an apocalyptic number.

It is an amenable number.

202311121601 is a deficient number, since it is larger than the sum of its proper divisors (1).

202311121601 is an equidigital number, since it uses as much as digits as its factorization.

202311121601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 202311121601 its reverse (106121113202), we get a palindrome (308432234803).

The spelling of 202311121601 in words is "two hundred two billion, three hundred eleven million, one hundred twenty-one thousand, six hundred one".