10200122120021 has 2 divisors, whose sum is σ = 10200122120022. Its totient is φ = 10200122120020.

The previous prime is 10200122119973. The next prime is 10200122120033. The reversal of 10200122120021 is 12002122100201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7365660300625 + 2834461819396 = 2713975^2 + 1683586^2 .

It is a cyclic number.

It is not a de Polignac number, because 10200122120021 - 2³⁴ = 10182942250837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10200122119978 and 10200122120005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10200122120081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5100061060010 + 5100061060011.

It is an arithmetic number, because the mean of its divisors is an integer number (5100061060011).

Almost surely, 2^{10200122120021} is an apocalyptic number.

It is an amenable number.

10200122120021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10200122120021 is an equidigital number, since it uses as much as digits as its factorization.

10200122120021 is an odious number, because the sum of its binary digits is odd.

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

Adding to 10200122120021 its reverse (12002122100201), we get a palindrome (22202244220222).

The spelling of 10200122120021 in words is "ten trillion, two hundred billion, one hundred twenty-two million, one hundred twenty thousand, twenty-one".