101020302123021 has 40 divisors (see below), whose sum is σ = 157890206791680. Its totient is φ = 64246038535008.

The previous prime is 101020302123017. The next prime is 101020302123053. The reversal of 101020302123021 is 120321203020101.

101020302123021 is a `hidden beast` number, since 10 + 102 + 0 + 302 + 1 + 230 + 21 = 666.

It is not a de Polignac number, because 101020302123021 - 2² = 101020302123017 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 101020302122985 and 101020302123003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101020302123001) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 71992141 + ... + 73381938.

It is an arithmetic number, because the mean of its divisors is an integer number (3947255169792).

Almost surely, 2^{101020302123021} is an apocalyptic number.

It is an amenable number.

101020302123021 is a deficient number, since it is larger than the sum of its proper divisors (56869904668659).

101020302123021 is a wasteful number, since it uses less digits than its factorization.

101020302123021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145374487 (or 145374478 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 101020302123021 its reverse (120321203020101), we get a palindrome (221341505143122).

The spelling of 101020302123021 in words is "one hundred one trillion, twenty billion, three hundred two million, one hundred twenty-three thousand, twenty-one".