1001121432 has 192 divisors, whose sum is σ = 2822238720. Its totient is φ = 295483392.

The previous prime is 1001121427. The next prime is 1001121467. The reversal of 1001121432 is 2341211001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12061663 + ... + 12061745.

It is an arithmetic number, because the mean of its divisors is an integer number (14699160).

Almost surely, 2^1001121432 is an apocalyptic number.

1001121432 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 1001121432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1411119360).

1001121432 is an abundant number, since it is smaller than the sum of its proper divisors (1821117288).

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

1001121432 is a wasteful number, since it uses less digits than its factorization.

1001121432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1001121432 is about 31640.5030301353. The cubic root of 1001121432 is about 1000.3736710192.

Adding to 1001121432 its reverse (2341211001), we get a palindrome (3342332433).

The spelling of 1001121432 in words is "one billion, one million, one hundred twenty-one thousand, four hundred thirty-two".