123102101450215 has 16 divisors (see below), whose sum is σ = 148357567612800. Its totient is φ = 98058411469312.

The previous prime is 123102101450201. The next prime is 123102101450221. The reversal of 123102101450215 is 512054101201321.

It is a cyclic number.

It is not a de Polignac number, because 123102101450215 - 2²⁵ = 123102067895783 is a prime.

It is a super-2 number, since 2×123102101450215² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4575321 + ... + 16344349.

It is an arithmetic number, because the mean of its divisors is an integer number (9272347975800).

Almost surely, 2^{123102101450215} is an apocalyptic number.

123102101450215 is a deficient number, since it is larger than the sum of its proper divisors (25255466162585).

123102101450215 is a wasteful number, since it uses less digits than its factorization.

123102101450215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11778026.

The product of its (nonzero) digits is 2400, while the sum is 28.

Adding to 123102101450215 its reverse (512054101201321), we get a palindrome (635156202651536).

The spelling of 123102101450215 in words is "one hundred twenty-three trillion, one hundred two billion, one hundred one million, four hundred fifty thousand, two hundred fifteen".