1123020111210 has 32 divisors (see below), whose sum is σ = 2705986325952. Its totient is φ = 298278912000.

The previous prime is 1123020111167. The next prime is 1123020111247. The reversal of 1123020111210 is 121110203211.

It is a super-2 number, since 2×1123020111210² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1123020111210.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74562199 + ... + 74577258.

It is an arithmetic number, because the mean of its divisors is an integer number (84562072686).

Almost surely, 2^{1123020111210} is an apocalyptic number.

1123020111210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1123020111210 is an abundant number, since it is smaller than the sum of its proper divisors (1582966214742).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1123020111210 is a wasteful number, since it uses less digits than its factorization.

1123020111210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149139718.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 1123020111210 its reverse (121110203211), we get a palindrome (1244130314421).

The spelling of 1123020111210 in words is "one trillion, one hundred twenty-three billion, twenty million, one hundred eleven thousand, two hundred ten".