101212434440 has 64 divisors (see below), whose sum is σ = 253156700160. Its totient is φ = 36165231360.

The previous prime is 101212434431. The next prime is 101212434451. The reversal of 101212434440 is 44434212101.

It is a super-2 number, since 2×101212434440² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3123224 + ... + 3155463.

It is an arithmetic number, because the mean of its divisors is an integer number (3955573440).

Almost surely, 2^101212434440 is an apocalyptic number.

101212434440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101212434440 is an abundant number, since it is smaller than the sum of its proper divisors (151944265720).

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

101212434440 is a wasteful number, since it uses less digits than its factorization.

101212434440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6278742 (or 6278738 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 101212434440 its reverse (44434212101), we get a palindrome (145646646541).

The spelling of 101212434440 in words is "one hundred one billion, two hundred twelve million, four hundred thirty-four thousand, four hundred forty".