123101155 has 8 divisors (see below), whose sum is σ = 152486784. Its totient is φ = 95304000.

The previous prime is 123101119. The next prime is 123101161. The reversal of 123101155 is 551101321.

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

It is not a de Polignac number, because 123101155 - 2⁹ = 123100643 is a prime.

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, 396946 + ... + 397255.

It is an arithmetic number, because the mean of its divisors is an integer number (19060848).

Almost surely, 2^123101155 is an apocalyptic number.

123101155 is a deficient number, since it is larger than the sum of its proper divisors (29385629).

123101155 is an equidigital number, since it uses as much as digits as its factorization.

123101155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794237.

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 123101155 is about 11095.0959887691. The cubic root of 123101155 is about 497.4552774121.

Adding to 123101155 its reverse (551101321), we get a palindrome (674202476).

It can be divided in two parts, 123101 and 155, that added together give a triangular number (123256 = T₄₉₆).

The spelling of 123101155 in words is "one hundred twenty-three million, one hundred one thousand, one hundred fifty-five".