1020216015 has 72 divisors (see below), whose sum is σ = 2215388448. Its totient is φ = 430496640.

The previous prime is 1020216013. The next prime is 1020216031. The reversal of 1020216015 is 5106120201.

It is not a de Polignac number, because 1020216015 - 2¹ = 1020216013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020216011) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 10870 + ... + 46460.

It is an arithmetic number, because the mean of its divisors is an integer number (30769284).

Almost surely, 2^1020216015 is an apocalyptic number.

1020216015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1020216015 is an abundant number, since it is smaller than the sum of its proper divisors (1195172433).

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

1020216015 is a wasteful number, since it uses less digits than its factorization.

1020216015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35629 (or 35619 counting only the distinct ones).

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

The square root of 1020216015 is about 31940.8205123162. The cubic root of 1020216015 is about 1006.6937651994.

Adding to 1020216015 its reverse (5106120201), we get a palindrome (6126336216).

The spelling of 1020216015 in words is "one billion, twenty million, two hundred sixteen thousand, fifteen".