1012021021212 has 24 divisors (see below), whose sum is σ = 2361659227536. Its totient is φ = 337300791168.

The previous prime is 1012021021201. The next prime is 1012021021213. The reversal of 1012021021212 is 2121201202101.

It is a junction number, because it is equal to n+sod(n) for n = 1012021021191 and 1012021021200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012021021213) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4836943 + ... + 5041830.

It is an arithmetic number, because the mean of its divisors is an integer number (98402467814).

Almost surely, 2^{1012021021212} is an apocalyptic number.

1012021021212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1012021021212 is an abundant number, since it is smaller than the sum of its proper divisors (1349638206324).

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

1012021021212 is a wasteful number, since it uses less digits than its factorization.

1012021021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9887317 (or 9887315 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1012021021212 its reverse (2121201202101), we get a palindrome (3133222223313).

The spelling of 1012021021212 in words is "one trillion, twelve billion, twenty-one million, twenty-one thousand, two hundred twelve".