101212346440 has 128 divisors (see below), whose sum is σ = 232779536640. Its totient is φ = 39600000000.

The previous prime is 101212346393. The next prime is 101212346453. The reversal of 101212346440 is 44643212101.

It is a junction number, because it is equal to n+sod(n) for n = 101212346399 and 101212346408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 153119710 + ... + 153120370.

It is an arithmetic number, because the mean of its divisors is an integer number (1818590130).

Almost surely, 2^101212346440 is an apocalyptic number.

101212346440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101212346440 is an abundant number, since it is smaller than the sum of its proper divisors (131567190200).

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

101212346440 is a wasteful number, since it uses less digits than its factorization.

101212346440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175 (or 1171 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 101212346440 its reverse (44643212101), we get a palindrome (145855558541).

The spelling of 101212346440 in words is "one hundred one billion, two hundred twelve million, three hundred forty-six thousand, four hundred forty".