10020102122021 has 4 divisors (see below), whose sum is σ = 10022102546700. Its totient is φ = 10018101697344.

The previous prime is 10020102121987. The next prime is 10020102122029. The reversal of 10020102122021 is 12022120102001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6988885322500 + 3031216799521 = 2643650^2 + 1741039^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10020102122021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10020102121987 and 10020102122005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10020102122029) 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, 1000204826 + ... + 1000214843.

It is an arithmetic number, because the mean of its divisors is an integer number (2505525636675).

Almost surely, 2^{10020102122021} is an apocalyptic number.

It is an amenable number.

10020102122021 is a deficient number, since it is larger than the sum of its proper divisors (2000424679).

10020102122021 is an equidigital number, since it uses as much as digits as its factorization.

10020102122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2000424678.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 10020102122021 its reverse (12022120102001), we get a palindrome (22042222224022).

The spelling of 10020102122021 in words is "ten trillion, twenty billion, one hundred two million, one hundred twenty-two thousand, twenty-one".