1211210122112 has 32 divisors (see below), whose sum is σ = 2413193819880. Its totient is φ = 605545790976.

The previous prime is 1211210122081. The next prime is 1211210122117. The reversal of 1211210122112 is 2112210121121.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211210122117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 864743 + ... + 1780505.

Almost surely, 2^{1211210122112} is an apocalyptic number.

It is an amenable number.

1211210122112 is a deficient number, since it is larger than the sum of its proper divisors (1201983697768).

1211210122112 is an equidigital number, since it uses as much as digits as its factorization.

1211210122112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926110 (or 926098 counting only the distinct ones).

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

Adding to 1211210122112 its reverse (2112210121121), we get a palindrome (3323420243233).

Subtracting 1211210122112 from its reverse (2112210121121), we obtain a palindrome (900999999009).

The spelling of 1211210122112 in words is "one trillion, two hundred eleven billion, two hundred ten million, one hundred twenty-two thousand, one hundred twelve".