1212022101312 has 224 divisors, whose sum is σ = 3902542156800. Its totient is φ = 365814720000.

The previous prime is 1212022101289. The next prime is 1212022101317. The reversal of 1212022101312 is 2131012202121.

1212022101312 is a `hidden beast` number, since 12 + 120 + 221 + 0 + 1 + 312 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212022101317) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4643989 + ... + 4898027.

It is an arithmetic number, because the mean of its divisors is an integer number (17422063200).

Almost surely, 2^{1212022101312} is an apocalyptic number.

1212022101312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212022101312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1951271078400).

1212022101312 is an abundant number, since it is smaller than the sum of its proper divisors (2690520055488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1212022101312 is a wasteful number, since it uses less digits than its factorization.

1212022101312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254322 (or 254306 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1212022101312 its reverse (2131012202121), we get a palindrome (3343034303433).

The spelling of 1212022101312 in words is "one trillion, two hundred twelve billion, twenty-two million, one hundred one thousand, three hundred twelve".