1001001121212 has 48 divisors (see below), whose sum is σ = 2397351398400. Its totient is φ = 324926661312.

The previous prime is 1001001121193. The next prime is 1001001121243. The reversal of 1001001121212 is 2121211001001.

It is a super-2 number, since 2×1001001121212² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

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 15 ways as a sum of consecutive naturals, for example, 4347123 + ... + 4571594.

It is an arithmetic number, because the mean of its divisors is an integer number (49944820800).

Almost surely, 2^{1001001121212} is an apocalyptic number.

1001001121212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1001001121212 is an abundant number, since it is smaller than the sum of its proper divisors (1396350277188).

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

1001001121212 is a wasteful number, since it uses less digits than its factorization.

1001001121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8918970 (or 8918968 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1001001121212 its reverse (2121211001001), we get a palindrome (3122212122213).

The spelling of 1001001121212 in words is "one trillion, one billion, one million, one hundred twenty-one thousand, two hundred twelve".