1215132102 has 12 divisors (see below), whose sum is σ = 2632786260. Its totient is φ = 405044028.

The previous prime is 1215132091. The next prime is 1215132131. The reversal of 1215132102 is 2012315121.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 67507339 = 1215132102 / (1 + 2 + 1 + 5 + 1 + 3 + 2 + 1 + 0 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33753652 + ... + 33753687.

It is an arithmetic number, because the mean of its divisors is an integer number (219398855).

Almost surely, 2^1215132102 is an apocalyptic number.

1215132102 is an abundant number, since it is smaller than the sum of its proper divisors (1417654158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1215132102 is a wasteful number, since it uses less digits than its factorization.

1215132102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67507347 (or 67507344 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1215132102 is about 34858.7449860146. The cubic root of 1215132102 is about 1067.1066625973.

Adding to 1215132102 its reverse (2012315121), we get a palindrome (3227447223).

It can be divided in two parts, 12151 and 32102, that added together give a triangular number (44253 = T₂₉₇).

The spelling of 1215132102 in words is "one billion, two hundred fifteen million, one hundred thirty-two thousand, one hundred two".