201121423032 has 64 divisors (see below), whose sum is σ = 517244958720. Its totient is φ = 65120934528.

The previous prime is 201121423003. The next prime is 201121423033. The reversal of 201121423032 is 230324121102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201121423033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 352453 + ... + 725579.

It is an arithmetic number, because the mean of its divisors is an integer number (8081952480).

Almost surely, 2^201121423032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201121423032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (258622479360).

201121423032 is an abundant number, since it is smaller than the sum of its proper divisors (316123535688).

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

201121423032 is a wasteful number, since it uses less digits than its factorization.

201121423032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373780 (or 373776 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 201121423032 its reverse (230324121102), we get a palindrome (431445544134).

The spelling of 201121423032 in words is "two hundred one billion, one hundred twenty-one million, four hundred twenty-three thousand, thirty-two".