10203212501 has 2 divisors, whose sum is σ = 10203212502. Its totient is φ = 10203212500.

The previous prime is 10203212471. The next prime is 10203212581. The reversal of 10203212501 is 10521230201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10085381476 + 117831025 = 100426^2 + 10855^2 .

It is a cyclic number.

It is not a de Polignac number, because 10203212501 - 2¹⁰ = 10203211477 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10203212501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10203212581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5101606250 + 5101606251.

It is an arithmetic number, because the mean of its divisors is an integer number (5101606251).

Almost surely, 2^10203212501 is an apocalyptic number.

It is an amenable number.

10203212501 is a deficient number, since it is larger than the sum of its proper divisors (1).

10203212501 is an equidigital number, since it uses as much as digits as its factorization.

10203212501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 17.

Adding to 10203212501 its reverse (10521230201), we get a palindrome (20724442702).

The spelling of 10203212501 in words is "ten billion, two hundred three million, two hundred twelve thousand, five hundred one".