121122210212 has 6 divisors (see below), whose sum is σ = 211963867878. Its totient is φ = 60561105104.

The previous prime is 121122210199. The next prime is 121122210217. The reversal of 121122210212 is 212012221121.

It can be written as a sum of positive squares in only one way, i.e., 95293220416 + 25828989796 = 308696^2 + 160714^2 .

It is not an unprimeable number, because it can be changed into a prime (121122210217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15140276273 + ... + 15140276280.

It is an arithmetic number, because the mean of its divisors is an integer number (35327311313).

Almost surely, 2^121122210212 is an apocalyptic number.

It is an amenable number.

121122210212 is a deficient number, since it is larger than the sum of its proper divisors (90841657666).

121122210212 is a wasteful number, since it uses less digits than its factorization.

121122210212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30280552557 (or 30280552555 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121122210212 its reverse (212012221121), we get a palindrome (333134431333).

The spelling of 121122210212 in words is "one hundred twenty-one billion, one hundred twenty-two million, two hundred ten thousand, two hundred twelve".