1061220135 has 16 divisors (see below), whose sum is σ = 1698923520. Its totient is φ = 565660320.

The previous prime is 1061220133. The next prime is 1061220143. The reversal of 1061220135 is 5310221601.

It is not a de Polignac number, because 1061220135 - 2¹ = 1061220133 is a prime.

It is a super-2 number, since 2×1061220135² = 2252376349858836450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061220133) 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, 8146 + ... + 46784.

It is an arithmetic number, because the mean of its divisors is an integer number (106182720).

Almost surely, 2^1061220135 is an apocalyptic number.

1061220135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1061220135 is a deficient number, since it is larger than the sum of its proper divisors (637703385).

1061220135 is a wasteful number, since it uses less digits than its factorization.

1061220135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40478.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1061220135 is about 32576.3738773977. The cubic root of 1061220135 is about 1020.0038879129.

Adding to 1061220135 its reverse (5310221601), we get a palindrome (6371441736).

The spelling of 1061220135 in words is "one billion, sixty-one million, two hundred twenty thousand, one hundred thirty-five".