1215525223234 has 16 divisors (see below), whose sum is σ = 2083779576000. Its totient is φ = 520933868784.

The previous prime is 1215525223111. The next prime is 1215525223261. The reversal of 1215525223234 is 4323225255121.

It is a junction number, because it is equal to n+sod(n) for n = 1215525223193 and 1215525223202.

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, 1091377 + ... + 1903195.

It is an arithmetic number, because the mean of its divisors is an integer number (130236223500).

Almost surely, 2^{1215525223234} is an apocalyptic number.

1215525223234 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1215525223234 is a deficient number, since it is larger than the sum of its proper divisors (868254352766).

1215525223234 is a wasteful number, since it uses less digits than its factorization.

1215525223234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918777.

The product of its digits is 144000, while the sum is 37.

The spelling of 1215525223234 in words is "one trillion, two hundred fifteen billion, five hundred twenty-five million, two hundred twenty-three thousand, two hundred thirty-four".