121155141 has 16 divisors (see below), whose sum is σ = 171535104. Its totient is φ = 75800064.

The previous prime is 121155119. The next prime is 121155163. The reversal of 121155141 is 141551121.

It is an interprime number because it is at equal distance from previous prime (121155119) and next prime (121155163).

It is not a de Polignac number, because 121155141 - 2⁵ = 121155109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121155641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15481 + ... + 21953.

It is an arithmetic number, because the mean of its divisors is an integer number (10720944).

Almost surely, 2^121155141 is an apocalyptic number.

It is an amenable number.

121155141 is a deficient number, since it is larger than the sum of its proper divisors (50379963).

121155141 is a wasteful number, since it uses less digits than its factorization.

121155141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6860.

The product of its digits is 200, while the sum is 21.

The square root of 121155141 is about 11007.0496046852. The cubic root of 121155141 is about 494.8200427367.

The spelling of 121155141 in words is "one hundred twenty-one million, one hundred fifty-five thousand, one hundred forty-one".