210212001111121 has 16 divisors (see below), whose sum is σ = 213147520185600. Its totient is φ = 207278000189568.

The previous prime is 210212001111053. The next prime is 210212001111247. The reversal of 210212001111121 is 121111100212012.

It is a cyclic number.

It is not a de Polignac number, because 210212001111121 - 2⁹ = 210212001110609 is a prime.

It is a super-2 number, since 2×210212001111121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210212001111095 and 210212001111104.

It is not an unprimeable number, because it can be changed into a prime (210212001151121) 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, 8693978610 + ... + 8694002788.

It is an arithmetic number, because the mean of its divisors is an integer number (13321720011600).

Almost surely, 2^{210212001111121} is an apocalyptic number.

It is an amenable number.

210212001111121 is a deficient number, since it is larger than the sum of its proper divisors (2935519074479).

210212001111121 is a wasteful number, since it uses less digits than its factorization.

210212001111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50568.

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

Adding to 210212001111121 its reverse (121111100212012), we get a palindrome (331323101323133).

The spelling of 210212001111121 in words is "two hundred ten trillion, two hundred twelve billion, one million, one hundred eleven thousand, one hundred twenty-one".