210022122021121 has 4 divisors (see below), whose sum is σ = 210022379628372. Its totient is φ = 210021864413872.

The previous prime is 210022122021113. The next prime is 210022122021139. The reversal of 210022122021121 is 121120221220012.

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 134137743786225 + 75884378234896 = 11581785^2 + 8711164^2 .

It is a cyclic number.

It is not a de Polignac number, because 210022122021121 - 2³ = 210022122021113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210022122721121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127576810 + ... + 129212563.

It is an arithmetic number, because the mean of its divisors is an integer number (52505594907093).

Almost surely, 2^{210022122021121} is an apocalyptic number.

It is an amenable number.

210022122021121 is a deficient number, since it is larger than the sum of its proper divisors (257607251).

210022122021121 is an equidigital number, since it uses as much as digits as its factorization.

210022122021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257607250.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 210022122021121 its reverse (121120221220012), we get a palindrome (331142343241133).

The spelling of 210022122021121 in words is "two hundred ten trillion, twenty-two billion, one hundred twenty-two million, twenty-one thousand, one hundred twenty-one".