1210120135 has 32 divisors (see below), whose sum is σ = 1700462592. Its totient is φ = 809585280.

The previous prime is 1210120103. The next prime is 1210120189. The reversal of 1210120135 is 5310210121.

It is not a de Polignac number, because 1210120135 - 2⁵ = 1210120103 is a prime.

It is a super-2 number, since 2×1210120135² = 2928781482264836450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 268914 + ... + 273376.

It is an arithmetic number, because the mean of its divisors is an integer number (53139456).

Almost surely, 2^1210120135 is an apocalyptic number.

1210120135 is a deficient number, since it is larger than the sum of its proper divisors (490342457).

1210120135 is a wasteful number, since it uses less digits than its factorization.

1210120135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4663.

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

The square root of 1210120135 is about 34786.7810382047. The cubic root of 1210120135 is about 1065.6375017496.

Adding to 1210120135 its reverse (5310210121), we get a palindrome (6520330256).

The spelling of 1210120135 in words is "one billion, two hundred ten million, one hundred twenty thousand, one hundred thirty-five".