101213023440 has 160 divisors (see below), whose sum is σ = 332636138496. Its totient is φ = 25413488640.

The previous prime is 101213023433. The next prime is 101213023519. The reversal of 101213023440 is 44320312101.

It is a super-2 number, since 2×101213023440² (a number of 23 digits) contains 22 as substring.

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, 91444 + ... + 459116.

Almost surely, 2^101213023440 is an apocalyptic number.

101213023440 is a gapful number since it is divisible by the number (10) 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 101213023440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166318069248).

101213023440 is an abundant number, since it is smaller than the sum of its proper divisors (231423115056).

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

101213023440 is a wasteful number, since it uses less digits than its factorization.

101213023440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367757 (or 367751 counting only the distinct ones).

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

Adding to 101213023440 its reverse (44320312101), we get a palindrome (145533335541).

The spelling of 101213023440 in words is "one hundred one billion, two hundred thirteen million, twenty-three thousand, four hundred forty".