20035213501 has 2 divisors, whose sum is σ = 20035213502. Its totient is φ = 20035213500.

The previous prime is 20035213481. The next prime is 20035213519. The reversal of 20035213501 is 10531253002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19439609476 + 595604025 = 139426^2 + 24405^2 .

It is a cyclic number.

It is not a de Polignac number, because 20035213501 - 2¹¹ = 20035211453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20035213531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10017606750 + 10017606751.

It is an arithmetic number, because the mean of its divisors is an integer number (10017606751).

Almost surely, 2^20035213501 is an apocalyptic number.

It is an amenable number.

20035213501 is a deficient number, since it is larger than the sum of its proper divisors (1).

20035213501 is an equidigital number, since it uses as much as digits as its factorization.

20035213501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 22.

Adding to 20035213501 its reverse (10531253002), we get a palindrome (30566466503).

The spelling of 20035213501 in words is "twenty billion, thirty-five million, two hundred thirteen thousand, five hundred one".