10200021122021 has 4 divisors (see below), whose sum is σ = 10200030162732. Its totient is φ = 10200012081312.

The previous prime is 10200021121999. The next prime is 10200021122077. The reversal of 10200021122021 is 12022112000201.

10200021122021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 8814901620100 + 1385119501921 = 2968990^2 + 1176911^2 .

It is a cyclic number.

It is not a de Polignac number, because 10200021122021 - 2²² = 10200016927717 is a prime.

It is a super-2 number, since 2×10200021122021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10200021121987 and 10200021122005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10200021122321) 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, 2538320 + ... + 5181033.

It is an arithmetic number, because the mean of its divisors is an integer number (2550007540683).

Almost surely, 2^{10200021122021} is an apocalyptic number.

It is an amenable number.

10200021122021 is a deficient number, since it is larger than the sum of its proper divisors (9040711).

10200021122021 is an equidigital number, since it uses as much as digits as its factorization.

10200021122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9040710.

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

Adding to 10200021122021 its reverse (12022112000201), we get a palindrome (22222133122222).

The spelling of 10200021122021 in words is "ten trillion, two hundred billion, twenty-one million, one hundred twenty-two thousand, twenty-one".