10001555101213 has 8 divisors (see below), whose sum is σ = 10771036747128. Its totient is φ = 9232092205824.

The previous prime is 10001555101211. The next prime is 10001555101217. The reversal of 10001555101213 is 31210155510001.

It can be written as a sum of positive squares in 4 ways, for example, as 736915799844 + 9264639301369 = 858438^2 + 3043787^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10001555101213 - 2¹ = 10001555101211 is a prime.

It is a super-2 number, since 2×10001555101213² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3569920 + ... + 5722537.

It is an arithmetic number, because the mean of its divisors is an integer number (1346379593391).

Almost surely, 2^{10001555101213} is an apocalyptic number.

10001555101213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

10001555101213 is a deficient number, since it is larger than the sum of its proper divisors (769481645915).

10001555101213 is an equidigital number, since it uses as much as digits as its factorization.

10001555101213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9375263.

The product of its (nonzero) digits is 750, while the sum is 25.

The spelling of 10001555101213 in words is "ten trillion, one billion, five hundred fifty-five million, one hundred one thousand, two hundred thirteen".