101133101021 has 4 divisors (see below), whose sum is σ = 101133782844. Its totient is φ = 101132419200.

The previous prime is 101133101011. The next prime is 101133101039. The reversal of 101133101021 is 120101331101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 37913541796 + 63219559225 = 194714^2 + 251435^2 .

It is a cyclic number.

It is not a de Polignac number, because 101133101021 - 2¹⁰ = 101133099997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101133100987 and 101133101005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101133101011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13790 + ... + 449951.

It is an arithmetic number, because the mean of its divisors is an integer number (25283445711).

Almost surely, 2^101133101021 is an apocalyptic number.

It is an amenable number.

101133101021 is a deficient number, since it is larger than the sum of its proper divisors (681823).

101133101021 is an equidigital number, since it uses as much as digits as its factorization.

101133101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681822.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 101133101021 its reverse (120101331101), we get a palindrome (221234432122).

The spelling of 101133101021 in words is "one hundred one billion, one hundred thirty-three million, one hundred one thousand, twenty-one".