101121155 has 8 divisors (see below), whose sum is σ = 121570512. Its totient is φ = 80746848.

The previous prime is 101121149. The next prime is 101121161. The reversal of 101121155 is 551121101.

It is an interprime number because it is at equal distance from previous prime (101121149) and next prime (101121161).

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 101121155 - 2¹⁴ = 101104771 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15752 + ... + 21221.

It is an arithmetic number, because the mean of its divisors is an integer number (15196314).

Almost surely, 2^101121155 is an apocalyptic number.

101121155 is a deficient number, since it is larger than the sum of its proper divisors (20449357).

101121155 is an equidigital number, since it uses as much as digits as its factorization.

101121155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37525.

The product of its (nonzero) digits is 50, while the sum is 17.

The square root of 101121155 is about 10055.9015011087. The cubic root of 101121155 is about 465.8870875899.

Adding to 101121155 its reverse (551121101), we get a palindrome (652242256).

The spelling of 101121155 in words is "one hundred one million, one hundred twenty-one thousand, one hundred fifty-five".