210121211201112 has 48 divisors (see below), whose sum is σ = 599029768779000. Its totient is φ = 66354066694656.

The previous prime is 210121211201089. The next prime is 210121211201149. The reversal of 210121211201112 is 211102112121012.

It is a happy number.

210121211201112 is a `hidden beast` number, since 21 + 0 + 121 + 211 + 201 + 112 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 76798686937 + ... + 76798689672.

Almost surely, 2^{210121211201112} is an apocalyptic number.

It is an amenable number.

210121211201112 is an abundant number, since it is smaller than the sum of its proper divisors (388908557577888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

210121211201112 is a wasteful number, since it uses less digits than its factorization.

210121211201112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153597376640 (or 153597376633 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 210121211201112 its reverse (211102112121012), we get a palindrome (421223323322124).

The spelling of 210121211201112 in words is "two hundred ten trillion, one hundred twenty-one billion, two hundred eleven million, two hundred one thousand, one hundred twelve".