10001555101212 has 48 divisors (see below), whose sum is σ = 23720825520000. Its totient is φ = 3279019988160.

The previous prime is 10001555101211. The next prime is 10001555101217. The reversal of 10001555101212 is 21210155510001.

It is a super-2 number, since 2×10001555101212² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001555101211) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 13442539 + ... + 14167037.

It is an arithmetic number, because the mean of its divisors is an integer number (494183865000).

Almost surely, 2^{10001555101212} is an apocalyptic number.

10001555101212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10001555101212 is an abundant number, since it is smaller than the sum of its proper divisors (13719270418788).

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

10001555101212 is a wasteful number, since it uses less digits than its factorization.

10001555101212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743426 (or 743424 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 24.

The spelling of 10001555101212 in words is "ten trillion, one billion, five hundred fifty-five million, one hundred one thousand, two hundred twelve".