101210406556 has 24 divisors (see below), whose sum is σ = 202655416320. Its totient is φ = 43325616432.

The previous prime is 101210406529. The next prime is 101210406581. The reversal of 101210406556 is 655604012101.

It is a super-2 number, since 2×101210406556² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2070076 + ... + 2118403.

It is an arithmetic number, because the mean of its divisors is an integer number (8443975680).

Almost surely, 2^101210406556 is an apocalyptic number.

It is an amenable number.

101210406556 is an abundant number, since it is smaller than the sum of its proper divisors (101445009764).

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

101210406556 is a wasteful number, since it uses less digits than its factorization.

101210406556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4189353 (or 4189351 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

Adding to 101210406556 its reverse (655604012101), we get a palindrome (756814418657).

The spelling of 101210406556 in words is "one hundred one billion, two hundred ten million, four hundred six thousand, five hundred fifty-six".