201101133440 has 64 divisors (see below), whose sum is σ = 490986351360. Its totient is φ = 78728942592.

The previous prime is 201101133419. The next prime is 201101133451. The reversal of 201101133440 is 44331101102.

It is a tau number, because it is divible by the number of its divisors (64).

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3312692 + ... + 3372851.

It is an arithmetic number, because the mean of its divisors is an integer number (7671661740).

Almost surely, 2^201101133440 is an apocalyptic number.

201101133440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201101133440 is an abundant number, since it is smaller than the sum of its proper divisors (289885217920).

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

201101133440 is an equidigital number, since it uses as much as digits as its factorization.

201101133440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6685609 (or 6685597 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 201101133440 its reverse (44331101102), we get a palindrome (245432234542).

The spelling of 201101133440 in words is "two hundred one billion, one hundred one million, one hundred thirty-three thousand, four hundred forty".