1001121213132 has 36 divisors (see below), whose sum is σ = 2530649485000. Its totient is φ = 333702122112.

The previous prime is 1001121213109. The next prime is 1001121213137. The reversal of 1001121213132 is 2313121211001.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is not an unprimeable number, because it can be changed into a prime (1001121213137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2893119 + ... + 3220617.

Almost surely, 2^{1001121213132} is an apocalyptic number.

1001121213132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1001121213132 is an abundant number, since it is smaller than the sum of its proper divisors (1529528271868).

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

1001121213132 is a wasteful number, since it uses less digits than its factorization.

1001121213132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412422 (or 412417 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1001121213132 its reverse (2313121211001), we get a palindrome (3314242424133).

The spelling of 1001121213132 in words is "one trillion, one billion, one hundred twenty-one million, two hundred thirteen thousand, one hundred thirty-two".