102155243240111 has 8 divisors (see below), whose sum is σ = 106095029423760. Its totient is φ = 98277500933568.

The previous prime is 102155243240023. The next prime is 102155243240143. The reversal of 102155243240111 is 111042342551201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102155243240111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102155243240411) 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, 15510965921 + ... + 15510972506.

It is an arithmetic number, because the mean of its divisors is an integer number (13261878677970).

Almost surely, 2^{102155243240111} is an apocalyptic number.

102155243240111 is a deficient number, since it is larger than the sum of its proper divisors (3939786183649).

102155243240111 is an equidigital number, since it uses as much as digits as its factorization.

102155243240111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31021938553.

The product of its (nonzero) digits is 9600, while the sum is 32.

Adding to 102155243240111 its reverse (111042342551201), we get a palindrome (213197585791312).

The spelling of 102155243240111 in words is "one hundred two trillion, one hundred fifty-five billion, two hundred forty-three million, two hundred forty thousand, one hundred eleven".