122121212 has 6 divisors (see below), whose sum is σ = 213712128. Its totient is φ = 61060604.

The previous prime is 122121203. The next prime is 122121239. The reversal of 122121212 is 212121221.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15265148 + ... + 15265155.

It is an arithmetic number, because the mean of its divisors is an integer number (35618688).

Almost surely, 2^122121212 is an apocalyptic number.

It is an amenable number.

122121212 is a deficient number, since it is larger than the sum of its proper divisors (91590916).

122121212 is a wasteful number, since it uses less digits than its factorization.

122121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30530307 (or 30530305 counting only the distinct ones).

The product of its digits is 32, while the sum is 14.

The square root of 122121212 is about 11050.8466643964. The cubic root of 122121212 is about 496.1317667176.

Adding to 122121212 its reverse (212121221), we get a palindrome (334242433).

Subtracting 122121212 from its reverse (212121221), we obtain a palindrome (90000009).

It can be divided in two parts, 1221 and 21212, that multiplied together give a palindrome (25899852).

The spelling of 122121212 in words is "one hundred twenty-two million, one hundred twenty-one thousand, two hundred twelve".