10200122000021 has 4 divisors (see below), whose sum is σ = 10200145507500. Its totient is φ = 10200098492544.

The previous prime is 10200122000009. The next prime is 10200122000053. The reversal of 10200122000021 is 12000022100201.

It is a happy number.

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 6464255400100 + 3735866599921 = 2542490^2 + 1932839^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10200122000021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10200121999966 and 10200122000011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10200122003021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11090396 + ... + 11974853.

It is an arithmetic number, because the mean of its divisors is an integer number (2550036376875).

Almost surely, 2^{10200122000021} is an apocalyptic number.

It is an amenable number.

10200122000021 is a deficient number, since it is larger than the sum of its proper divisors (23507479).

10200122000021 is an equidigital number, since it uses as much as digits as its factorization.

10200122000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23507478.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 10200122000021 its reverse (12000022100201), we get a palindrome (22200144100222).

It can be divided in two parts, 10200 and 122000021, that added together give a palindrome (122010221).

The spelling of 10200122000021 in words is "ten trillion, two hundred billion, one hundred twenty-two million, twenty-one", and thus it is an aban number.