11661055001121 has 8 divisors (see below), whose sum is σ = 15811600001760. Its totient is φ = 7642273333952.

The previous prime is 11661055001041. The next prime is 11661055001131. The reversal of 11661055001121 is 12110055016611.

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 11661055001121 - 2³⁸ = 11386177094177 is a prime.

It is a super-2 number, since 2×11661055001121² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11661055001131) 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, 32940833160 + ... + 32940833513.

It is an arithmetic number, because the mean of its divisors is an integer number (1976450000220).

Almost surely, 2^{11661055001121} is an apocalyptic number.

It is an amenable number.

11661055001121 is a deficient number, since it is larger than the sum of its proper divisors (4150545000639).

11661055001121 is an equidigital number, since it uses as much as digits as its factorization.

11661055001121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65881666735.

The product of its (nonzero) digits is 1800, while the sum is 30.

The spelling of 11661055001121 in words is "eleven trillion, six hundred sixty-one billion, fifty-five million, one thousand, one hundred twenty-one".