155122102212345 has 12 divisors (see below), whose sum is σ = 268878310501476. Its totient is φ = 82731787846560.

The previous prime is 155122102212323. The next prime is 155122102212449. The reversal of 155122102212345 is 543212201221551.

155122102212345 is a `hidden beast` number, since 1 + 5 + 512 + 2 + 10 + 2 + 2 + 123 + 4 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 63281849990121 + 91840252222224 = 7954989^2 + 9583332^2 .

It is not a de Polignac number, because 155122102212345 - 2⁶ = 155122102212281 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1723578913426 + ... + 1723578913515.

It is an arithmetic number, because the mean of its divisors is an integer number (22406525875123).

Almost surely, 2^{155122102212345} is an apocalyptic number.

155122102212345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155122102212345 is a deficient number, since it is larger than the sum of its proper divisors (113756208289131).

155122102212345 is a wasteful number, since it uses less digits than its factorization.

155122102212345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3447157826952 (or 3447157826949 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

Adding to 155122102212345 its reverse (543212201221551), we get a palindrome (698334303433896).

The spelling of 155122102212345 in words is "one hundred fifty-five trillion, one hundred twenty-two billion, one hundred two million, two hundred twelve thousand, three hundred forty-five".