1012011121212 has 432 divisors, whose sum is σ = 3056251377312. Its totient is φ = 258289274880.

The previous prime is 1012011121193. The next prime is 1012011121357. The reversal of 1012011121212 is 2121211102101.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1012011121191 and 1012011121200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1942439512 + ... + 1942440032.

It is an arithmetic number, because the mean of its divisors is an integer number (7074655966).

Almost surely, 2^{1012011121212} is an apocalyptic number.

1012011121212 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 1012011121212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1528125688656).

1012011121212 is an abundant number, since it is smaller than the sum of its proper divisors (2044240256100).

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

1012011121212 is a wasteful number, since it uses less digits than its factorization.

1012011121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746 (or 678 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1012011121212 its reverse (2121211102101), we get a palindrome (3133222223313).

The spelling of 1012011121212 in words is "one trillion, twelve billion, eleven million, one hundred twenty-one thousand, two hundred twelve".