102123210434445 has 48 divisors (see below), whose sum is σ = 180371397501360. Its totient is φ = 53432737532928.

The previous prime is 102123210434431. The next prime is 102123210434447. The reversal of 102123210434445 is 544434012321201.

102123210434445 is a `hidden beast` number, since 1 + 0 + 2 + 1 + 2 + 3 + 210 + 434 + 4 + 4 + 5 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 2225864076489 + 99897346357956 = 1491933^2 + 9994866^2 .

It is not a de Polignac number, because 102123210434445 - 2¹³ = 102123210426253 is a prime.

It is a super-2 number, since 2×102123210434445² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102123210434447) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21888289 + ... + 26140841.

It is an arithmetic number, because the mean of its divisors is an integer number (3757737447945).

Almost surely, 2^{102123210434445} is an apocalyptic number.

102123210434445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102123210434445 is a deficient number, since it is larger than the sum of its proper divisors (78248187066915).

102123210434445 is a wasteful number, since it uses less digits than its factorization.

102123210434445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4262686 (or 4262683 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

Adding to 102123210434445 its reverse (544434012321201), we get a palindrome (646557222755646).

The spelling of 102123210434445 in words is "one hundred two trillion, one hundred twenty-three billion, two hundred ten million, four hundred thirty-four thousand, four hundred forty-five".