1012221003 has 16 divisors (see below), whose sum is σ = 1357364736. Its totient is φ = 670956000.

The previous prime is 1012220983. The next prime is 1012221013. The reversal of 1012221003 is 3001222101.

It is not a de Polignac number, because 1012221003 - 2⁸ = 1012220747 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1012221003.

It is not an unprimeable number, because it can be changed into a prime (1012221013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 762126 + ... + 763452.

It is an arithmetic number, because the mean of its divisors is an integer number (84835296).

Almost surely, 2^1012221003 is an apocalyptic number.

1012221003 is a deficient number, since it is larger than the sum of its proper divisors (345143733).

1012221003 is a wasteful number, since it uses less digits than its factorization.

1012221003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2594.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1012221003 is about 31815.4208364434. The cubic root of 1012221003 is about 1004.0571846579.

Adding to 1012221003 its reverse (3001222101), we get a palindrome (4013443104).

It can be divided in two parts, 10122 and 21003, that added together give a triangular number (31125 = T₂₄₉).

The spelling of 1012221003 in words is "one billion, twelve million, two hundred twenty-one thousand, three".