201124021340 has 96 divisors (see below), whose sum is σ = 472699051776. Its totient is φ = 71264586240.

The previous prime is 201124021337. The next prime is 201124021369. The reversal of 201124021340 is 43120421102.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1257539 + ... + 1408421.

It is an arithmetic number, because the mean of its divisors is an integer number (4923948456).

Almost surely, 2^201124021340 is an apocalyptic number.

201124021340 is a gapful number since it is divisible by the number (20) 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 201124021340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236349525888).

201124021340 is an abundant number, since it is smaller than the sum of its proper divisors (271575030436).

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

201124021340 is a wasteful number, since it uses less digits than its factorization.

201124021340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151059 (or 151057 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 201124021340 its reverse (43120421102), we get a palindrome (244244442442).

The spelling of 201124021340 in words is "two hundred one billion, one hundred twenty-four million, twenty-one thousand, three hundred forty".