1201121222212 has 12 divisors (see below), whose sum is σ = 2113575190636. Its totient is φ = 597242596320.

The previous prime is 1201121222177. The next prime is 1201121222219. The reversal of 1201121222212 is 2122221211021.

It can be written as a sum of positive squares in 2 ways, for example, as 510387363396 + 690733858816 = 714414^2 + 831104^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1201121222212.

It is not an unprimeable number, because it can be changed into a prime (1201121222219) 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, 829502883 + ... + 829504330.

Almost surely, 2^{1201121222212} is an apocalyptic number.

It is an amenable number.

1201121222212 is a deficient number, since it is larger than the sum of its proper divisors (912453968424).

1201121222212 is a wasteful number, since it uses less digits than its factorization.

1201121222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1659007398 (or 1659007396 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1201121222212 its reverse (2122221211021), we get a palindrome (3323342433233).

The spelling of 1201121222212 in words is "one trillion, two hundred one billion, one hundred twenty-one million, two hundred twenty-two thousand, two hundred twelve".