1215112353101 has 32 divisors (see below), whose sum is σ = 1309453689600. Its totient is φ = 1125254592000.

The previous prime is 1215112353061. The next prime is 1215112353197. The reversal of 1215112353101 is 1013532115121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1215112353101 - 2¹⁴ = 1215112336717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215112353001) 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, 215480840 + ... + 215486478.

It is an arithmetic number, because the mean of its divisors is an integer number (40920427800).

Almost surely, 2^{1215112353101} is an apocalyptic number.

It is an amenable number.

1215112353101 is a deficient number, since it is larger than the sum of its proper divisors (94341336499).

1215112353101 is a wasteful number, since it uses less digits than its factorization.

1215112353101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8741.

The product of its (nonzero) digits is 900, while the sum is 26.

Adding to 1215112353101 its reverse (1013532115121), we get a palindrome (2228644468222).

The spelling of 1215112353101 in words is "one trillion, two hundred fifteen billion, one hundred twelve million, three hundred fifty-three thousand, one hundred one".