201150421 has 2 divisors, whose sum is σ = 201150422. Its totient is φ = 201150420.

The previous prime is 201150419. The next prime is 201150449. The reversal of 201150421 is 124051102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194463025 + 6687396 = 13945^2 + 2586^2 .

It is a cyclic number.

It is not a de Polignac number, because 201150421 - 2¹ = 201150419 is a prime.

It is a super-2 number, since 2×201150421² = 80922983736954482, which contains 22 as substring.

Together with 201150419, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 201150395 and 201150404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201150401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100575210 + 100575211.

It is an arithmetic number, because the mean of its divisors is an integer number (100575211).

Almost surely, 2^201150421 is an apocalyptic number.

It is an amenable number.

201150421 is a deficient number, since it is larger than the sum of its proper divisors (1).

201150421 is an equidigital number, since it uses as much as digits as its factorization.

201150421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 201150421 is about 14182.7508262678. The cubic root of 201150421 is about 585.9226883760.

The spelling of 201150421 in words is "two hundred one million, one hundred fifty thousand, four hundred twenty-one".