1051220205 has 48 divisors (see below), whose sum is σ = 2090499840. Its totient is φ = 478692864.

The previous prime is 1051220167. The next prime is 1051220213. The reversal of 1051220205 is 5020221501.

It is not a de Polignac number, because 1051220205 - 2¹² = 1051216109 is a prime.

It is a super-2 number, since 2×1051220205² = 2210127838800484050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 76501 + ... + 89189.

It is an arithmetic number, because the mean of its divisors is an integer number (43552080).

Almost surely, 2^1051220205 is an apocalyptic number.

1051220205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1051220205 is a deficient number, since it is larger than the sum of its proper divisors (1039279635).

1051220205 is a wasteful number, since it uses less digits than its factorization.

1051220205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12970 (or 12967 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 1051220205 is about 32422.5261970748. The cubic root of 1051220205 is about 1016.7899224687.

Adding to 1051220205 its reverse (5020221501), we get a palindrome (6071441706).

The spelling of 1051220205 in words is "one billion, fifty-one million, two hundred twenty thousand, two hundred five".