210231020112121 has 16 divisors (see below), whose sum is σ = 216273945772800. Its totient is φ = 204280717632768.

The previous prime is 210231020112079. The next prime is 210231020112131. The reversal of 210231020112121 is 121211020132012.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210231020112121 is a prime.

It is a super-2 number, since 2×210231020112121² (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 (210231020112131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40513806 + ... + 45407383.

It is an arithmetic number, because the mean of its divisors is an integer number (13517121610800).

Almost surely, 2^{210231020112121} is an apocalyptic number.

It is an amenable number.

210231020112121 is a deficient number, since it is larger than the sum of its proper divisors (6042925660679).

210231020112121 is a wasteful number, since it uses less digits than its factorization.

210231020112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85921728.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 210231020112121 its reverse (121211020132012), we get a palindrome (331442040244133).

The spelling of 210231020112121 in words is "two hundred ten trillion, two hundred thirty-one billion, twenty million, one hundred twelve thousand, one hundred twenty-one".