122121111210212 has 12 divisors (see below), whose sum is σ = 214598716173996. Its totient is φ = 60807192303360.

The previous prime is 122121111210211. The next prime is 122121111210223. The reversal of 122121111210212 is 212012111121221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 51212686940416 + 70908424269796 = 7156304^2 + 8420714^2 .

It is not an unprimeable number, because it can be changed into a prime (122121111210211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63340824353 + ... + 63340826280.

It is an arithmetic number, because the mean of its divisors is an integer number (17883226347833).

Almost surely, 2^{122121111210212} is an apocalyptic number.

It is an amenable number.

122121111210212 is a deficient number, since it is larger than the sum of its proper divisors (92477604963784).

122121111210212 is a wasteful number, since it uses less digits than its factorization.

122121111210212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126681650878 (or 126681650876 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 122121111210212 its reverse (212012111121221), we get a palindrome (334133222331433).

The spelling of 122121111210212 in words is "one hundred twenty-two trillion, one hundred twenty-one billion, one hundred eleven million, two hundred ten thousand, two hundred twelve".