1021103215 has 16 divisors (see below), whose sum is σ = 1415348640. Its totient is φ = 698936320.

The previous prime is 1021103197. The next prime is 1021103261. The reversal of 1021103215 is 5123011201.

It is not a de Polignac number, because 1021103215 - 2⁷ = 1021103087 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 545110 + ... + 546979.

It is an arithmetic number, because the mean of its divisors is an integer number (88459290).

Almost surely, 2^1021103215 is an apocalyptic number.

1021103215 is a deficient number, since it is larger than the sum of its proper divisors (394245425).

1021103215 is a wasteful number, since it uses less digits than its factorization.

1021103215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092122.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 1021103215 is about 31954.7056785069. The cubic root of 1021103215 is about 1006.9854942461.

Adding to 1021103215 its reverse (5123011201), we get a palindrome (6144114416).

The spelling of 1021103215 in words is "one billion, twenty-one million, one hundred three thousand, two hundred fifteen".