101022440 has 32 divisors (see below), whose sum is σ = 237185280. Its totient is φ = 38651712.

The previous prime is 101022419. The next prime is 101022443. The reversal of 101022440 is 44220101.

It is not an unprimeable number, because it can be changed into a prime (101022443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53984 + ... + 55823.

It is an arithmetic number, because the mean of its divisors is an integer number (7412040).

Almost surely, 2^101022440 is an apocalyptic number.

101022440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101022440 is an abundant number, since it is smaller than the sum of its proper divisors (136162840).

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

101022440 is a wasteful number, since it uses less digits than its factorization.

101022440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109841 (or 109837 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 101022440 is about 10050.9919908435. The cubic root of 101022440 is about 465.7354377622.

Adding to 101022440 its reverse (44220101), we get a palindrome (145242541).

The spelling of 101022440 in words is "one hundred one million, twenty-two thousand, four hundred forty".