10111221202501 has 2 divisors, whose sum is σ = 10111221202502. Its totient is φ = 10111221202500.

The previous prime is 10111221202499. The next prime is 10111221202507. The reversal of 10111221202501 is 10520212211101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6896637561025 + 3214583641476 = 2626145^2 + 1792926^2 .

It is a cyclic number.

It is not a de Polignac number, because 10111221202501 - 2¹ = 10111221202499 is a prime.

Together with 10111221202499, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10111221202507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5055610601250 + 5055610601251.

It is an arithmetic number, because the mean of its divisors is an integer number (5055610601251).

Almost surely, 2^{10111221202501} is an apocalyptic number.

It is an amenable number.

10111221202501 is a deficient number, since it is larger than the sum of its proper divisors (1).

10111221202501 is an equidigital number, since it uses as much as digits as its factorization.

10111221202501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 19.

Adding to 10111221202501 its reverse (10520212211101), we get a palindrome (20631433413602).

The spelling of 10111221202501 in words is "ten trillion, one hundred eleven billion, two hundred twenty-one million, two hundred two thousand, five hundred one".