101021011253 has 2 divisors, whose sum is σ = 101021011254. Its totient is φ = 101021011252.

The previous prime is 101021011177. The next prime is 101021011271. The reversal of 101021011253 is 352110120101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99427963684 + 1593047569 = 315322^2 + 39913^2 .

It is a cyclic number.

It is not a de Polignac number, because 101021011253 - 2²⁰ = 101019962677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101021011453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50510505626 + 50510505627.

It is an arithmetic number, because the mean of its divisors is an integer number (50510505627).

Almost surely, 2^101021011253 is an apocalyptic number.

It is an amenable number.

101021011253 is a deficient number, since it is larger than the sum of its proper divisors (1).

101021011253 is an equidigital number, since it uses as much as digits as its factorization.

101021011253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60, while the sum is 17.

Adding to 101021011253 its reverse (352110120101), we get a palindrome (453131131354).

The spelling of 101021011253 in words is "one hundred one billion, twenty-one million, eleven thousand, two hundred fifty-three".