201020510429 has 2 divisors, whose sum is σ = 201020510430. Its totient is φ = 201020510428.

The previous prime is 201020510401. The next prime is 201020510437. The reversal of 201020510429 is 924015020102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 189947788900 + 11072721529 = 435830^2 + 105227^2 .

It is a cyclic number.

It is not a de Polignac number, because 201020510429 - 2¹² = 201020506333 is a prime.

It is a super-2 number, since 2×201020510429² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201020510398 and 201020510407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201020510459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100510255214 + 100510255215.

It is an arithmetic number, because the mean of its divisors is an integer number (100510255215).

Almost surely, 2^201020510429 is an apocalyptic number.

It is an amenable number.

201020510429 is a deficient number, since it is larger than the sum of its proper divisors (1).

201020510429 is an equidigital number, since it uses as much as digits as its factorization.

201020510429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 26.

The spelling of 201020510429 in words is "two hundred one billion, twenty million, five hundred ten thousand, four hundred twenty-nine".