101750010721 has 2 divisors, whose sum is σ = 101750010722. Its totient is φ = 101750010720.

The previous prime is 101750010647. The next prime is 101750010757. The reversal of 101750010721 is 127010057101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97219240000 + 4530770721 = 311800^2 + 67311^2 .

It is a cyclic number.

It is not a de Polignac number, because 101750010721 - 2²¹ = 101747913569 is a prime.

It is a super-2 number, since 2×101750010721² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (101750010221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50875005360 + 50875005361.

It is an arithmetic number, because the mean of its divisors is an integer number (50875005361).

Almost surely, 2^101750010721 is an apocalyptic number.

It is an amenable number.

101750010721 is a deficient number, since it is larger than the sum of its proper divisors (1).

101750010721 is an equidigital number, since it uses as much as digits as its factorization.

101750010721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 490, while the sum is 25.

Adding to 101750010721 its reverse (127010057101), we get a palindrome (228760067822).

The spelling of 101750010721 in words is "one hundred one billion, seven hundred fifty million, ten thousand, seven hundred twenty-one".