235302500021 has 2 divisors, whose sum is σ = 235302500022. Its totient is φ = 235302500020.

The previous prime is 235302499807. The next prime is 235302500029. The reversal of 235302500021 is 120005203532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146206816900 + 89095683121 = 382370^2 + 298489^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-235302500021 is a prime.

It is a super-2 number, since 2×235302500021² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 235302500021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (235302500029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117651250010 + 117651250011.

It is an arithmetic number, because the mean of its divisors is an integer number (117651250011).

Almost surely, 2^235302500021 is an apocalyptic number.

It is an amenable number.

235302500021 is a deficient number, since it is larger than the sum of its proper divisors (1).

235302500021 is an equidigital number, since it uses as much as digits as its factorization.

235302500021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 23.

Adding to 235302500021 its reverse (120005203532), we get a palindrome (355307703553).

The spelling of 235302500021 in words is "two hundred thirty-five billion, three hundred two million, five hundred thousand, twenty-one".