10000121155 has 8 divisors (see below), whose sum is σ = 12072003552. Its totient is φ = 7952191488.

The previous prime is 10000121149. The next prime is 10000121203. The reversal of 10000121155 is 55112100001.

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 10000121155 - 2³ = 10000121147 is a prime.

It is a super-2 number, since 2×10000121155² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5987262 + ... + 5988931.

It is an arithmetic number, because the mean of its divisors is an integer number (1509000444).

Almost surely, 2^10000121155 is an apocalyptic number.

10000121155 is a deficient number, since it is larger than the sum of its proper divisors (2071882397).

10000121155 is a wasteful number, since it uses less digits than its factorization.

10000121155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11976365.

The product of its (nonzero) digits is 50, while the sum is 16.

Adding to 10000121155 its reverse (55112100001), we get a palindrome (65112221156).

The spelling of 10000121155 in words is "ten billion, one hundred twenty-one thousand, one hundred fifty-five".