210122120112121 has 16 divisors (see below), whose sum is σ = 243988653237120. Its totient is φ = 177237040337280.

The previous prime is 210122120112103. The next prime is 210122120112181. The reversal of 210122120112121 is 121211021221012.

It is a happy number.

It is not a de Polignac number, because 210122120112121 - 2¹⁹ = 210122119587833 is a prime.

It is a super-2 number, since 2×210122120112121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210122120112181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 799097626 + ... + 799360531.

It is an arithmetic number, because the mean of its divisors is an integer number (15249290827320).

Almost surely, 2^{210122120112121} is an apocalyptic number.

It is an amenable number.

210122120112121 is a deficient number, since it is larger than the sum of its proper divisors (33866533124999).

210122120112121 is a wasteful number, since it uses less digits than its factorization.

210122120112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1598458464.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 210122120112121 its reverse (121211021221012), we get a palindrome (331333141333133).

The spelling of 210122120112121 in words is "two hundred ten trillion, one hundred twenty-two billion, one hundred twenty million, one hundred twelve thousand, one hundred twenty-one".