210212222021121 has 128 divisors (see below), whose sum is σ = 292087627776000. Its totient is φ = 134424441575424.

The previous prime is 210212222021119. The next prime is 210212222021177. The reversal of 210212222021121 is 121120222212012.

It is not a de Polignac number, because 210212222021121 - 2¹ = 210212222021119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (210212222025121) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 166967610190 + ... + 166967611448.

It is an arithmetic number, because the mean of its divisors is an integer number (2281934592000).

Almost surely, 2^{210212222021121} is an apocalyptic number.

It is an amenable number.

210212222021121 is a deficient number, since it is larger than the sum of its proper divisors (81875405754879).

210212222021121 is a wasteful number, since it uses less digits than its factorization.

210212222021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2111.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 210212222021121 its reverse (121120222212012), we get a palindrome (331332444233133).

The spelling of 210212222021121 in words is "two hundred ten trillion, two hundred twelve billion, two hundred twenty-two million, twenty-one thousand, one hundred twenty-one".