201124034021 has 2 divisors, whose sum is σ = 201124034022. Its totient is φ = 201124034020.

The previous prime is 201124034003. The next prime is 201124034053. The reversal of 201124034021 is 120430421102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127295536225 + 73828497796 = 356785^2 + 271714^2 .

It is a cyclic number.

It is not a de Polignac number, because 201124034021 - 2¹⁰ = 201124032997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201124033984 and 201124034002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201124034521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100562017010 + 100562017011.

It is an arithmetic number, because the mean of its divisors is an integer number (100562017011).

Almost surely, 2^201124034021 is an apocalyptic number.

It is an amenable number.

201124034021 is a deficient number, since it is larger than the sum of its proper divisors (1).

201124034021 is an equidigital number, since it uses as much as digits as its factorization.

201124034021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 201124034021 its reverse (120430421102), we get a palindrome (321554455123).

The spelling of 201124034021 in words is "two hundred one billion, one hundred twenty-four million, thirty-four thousand, twenty-one".