1211022121112 has 16 divisors (see below), whose sum is σ = 2272864620840. Its totient is φ = 604924888896.

The previous prime is 1211022121091. The next prime is 1211022121129. The reversal of 1211022121112 is 2111212201121.

It is a super-2 number, since 2×1211022121112² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73262678 + ... + 73279205.

Almost surely, 2^{1211022121112} is an apocalyptic number.

It is an amenable number.

1211022121112 is a deficient number, since it is larger than the sum of its proper divisors (1061842499728).

1211022121112 is a wasteful number, since it uses less digits than its factorization.

1211022121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146542922 (or 146542918 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1211022121112 its reverse (2111212201121), we get a palindrome (3322234322233).

The spelling of 1211022121112 in words is "one trillion, two hundred eleven billion, twenty-two million, one hundred twenty-one thousand, one hundred twelve".