1023211120 has 40 divisors (see below), whose sum is σ = 2482403616. Its totient is φ = 391488768.

The previous prime is 1023211117. The next prime is 1023211213. The reversal of 1023211120 is 211123201.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 1023211120.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276207 + ... + 279886.

Almost surely, 2^1023211120 is an apocalyptic number.

1023211120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1023211120 is an abundant number, since it is smaller than the sum of its proper divisors (1459192496).

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

1023211120 is a wasteful number, since it uses less digits than its factorization.

1023211120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556129 (or 556123 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1023211120 is about 31987.6713750782. The cubic root of 1023211120 is about 1007.6779383887.

Adding to 1023211120 its reverse (211123201), we get a palindrome (1234334321).

The spelling of 1023211120 in words is "one billion, twenty-three million, two hundred eleven thousand, one hundred twenty".