210122121112 has 8 divisors (see below), whose sum is σ = 393978977100. Its totient is φ = 105061060552.

The previous prime is 210122121059. The next prime is 210122121113. The reversal of 210122121112 is 211121221012.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×210122121112² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210122121113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13132632562 + ... + 13132632577.

Almost surely, 2^210122121112 is an apocalyptic number.

It is an amenable number.

210122121112 is a deficient number, since it is larger than the sum of its proper divisors (183856855988).

210122121112 is a wasteful number, since it uses less digits than its factorization.

210122121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26265265145 (or 26265265141 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 210122121112 its reverse (211121221012), we get a palindrome (421243342124).

The spelling of 210122121112 in words is "two hundred ten billion, one hundred twenty-two million, one hundred twenty-one thousand, one hundred twelve".