10111405144021 has 2 divisors, whose sum is σ = 10111405144022. Its totient is φ = 10111405144020.

The previous prime is 10111405144003. The next prime is 10111405144037. The reversal of 10111405144021 is 12044150411101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9858155652900 + 253249491121 = 3139770^2 + 503239^2 .

It is a cyclic number.

It is not a de Polignac number, because 10111405144021 - 2¹⁹ = 10111404619733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10111405144091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5055702572010 + 5055702572011.

It is an arithmetic number, because the mean of its divisors is an integer number (5055702572011).

Almost surely, 2^{10111405144021} is an apocalyptic number.

It is an amenable number.

10111405144021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10111405144021 is an equidigital number, since it uses as much as digits as its factorization.

10111405144021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 640, while the sum is 25.

Adding to 10111405144021 its reverse (12044150411101), we get a palindrome (22155555555122).

The spelling of 10111405144021 in words is "ten trillion, one hundred eleven billion, four hundred five million, one hundred forty-four thousand, twenty-one".