122121112 has 8 divisors (see below), whose sum is σ = 228977100. Its totient is φ = 61060552.

The previous prime is 122121107. The next prime is 122121119. The reversal of 122121112 is 211121221.

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

It is a super-2 number, since 2×122121112² = 29827131992233088, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 122121092 and 122121101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122121119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7632562 + ... + 7632577.

Almost surely, 2^122121112 is an apocalyptic number.

It is an amenable number.

122121112 is a deficient number, since it is larger than the sum of its proper divisors (106855988).

122121112 is a wasteful number, since it uses less digits than its factorization.

122121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15265145 (or 15265141 counting only the distinct ones).

The product of its digits is 16, while the sum is 13.

The square root of 122121112 is about 11050.8421398552. The cubic root of 122121112 is about 496.1316312969.

Adding to 122121112 its reverse (211121221), we get a palindrome (333242333).

It can be divided in two parts, 1221 and 21112, that multiplied together give a palindrome (25777752).

The spelling of 122121112 in words is "one hundred twenty-two million, one hundred twenty-one thousand, one hundred twelve".