1001120101212 has 96 divisors (see below), whose sum is σ = 2916458979840. Its totient is φ = 259664267520.

The previous prime is 1001120101211. The next prime is 1001120101249. The reversal of 1001120101212 is 2121010211001.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001120101211) 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, 108963 + ... + 1419194.

It is an arithmetic number, because the mean of its divisors is an integer number (30379781040).

Almost surely, 2^{1001120101212} is an apocalyptic number.

1001120101212 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 1001120101212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1458229489920).

1001120101212 is an abundant number, since it is smaller than the sum of its proper divisors (1915338878628).

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

1001120101212 is a wasteful number, since it uses less digits than its factorization.

1001120101212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1528891 (or 1528889 counting only the distinct ones).

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

Adding to 1001120101212 its reverse (2121010211001), we get a palindrome (3122130312213).

The spelling of 1001120101212 in words is "one trillion, one billion, one hundred twenty million, one hundred one thousand, two hundred twelve".