1215112206071 has 32 divisors (see below), whose sum is σ = 1314593280000. Its totient is φ = 1120708995840.

The previous prime is 1215112206067. The next prime is 1215112206107. The reversal of 1215112206071 is 1706022115121.

It is a cyclic number.

It is not a de Polignac number, because 1215112206071 - 2² = 1215112206067 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215112206271) 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, 86792930 + ... + 86806928.

It is an arithmetic number, because the mean of its divisors is an integer number (41081040000).

Almost surely, 2^{1215112206071} is an apocalyptic number.

1215112206071 is a deficient number, since it is larger than the sum of its proper divisors (99481073929).

1215112206071 is a wasteful number, since it uses less digits than its factorization.

1215112206071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15599.

The product of its (nonzero) digits is 1680, while the sum is 29.

The spelling of 1215112206071 in words is "one trillion, two hundred fifteen billion, one hundred twelve million, two hundred six thousand, seventy-one".