1233856212015 has 32 divisors (see below), whose sum is σ = 2256837497856. Its totient is φ = 563887733760.

The previous prime is 1233856211947. The next prime is 1233856212019. The reversal of 1233856212015 is 5102126583321.

It is not a de Polignac number, because 1233856212015 - 2¹⁵ = 1233856179247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233856212019) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1304802 + ... + 2042111.

It is an arithmetic number, because the mean of its divisors is an integer number (70526171808).

Almost surely, 2^{1233856212015} is an apocalyptic number.

1233856212015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1233856212015 is a deficient number, since it is larger than the sum of its proper divisors (1022981285841).

1233856212015 is a wasteful number, since it uses less digits than its factorization.

1233856212015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3350439.

The product of its (nonzero) digits is 86400, while the sum is 39.

The spelling of 1233856212015 in words is "one trillion, two hundred thirty-three billion, eight hundred fifty-six million, two hundred twelve thousand, fifteen".