1002111972 has 24 divisors (see below), whose sum is σ = 2339937600. Its totient is φ = 333797856.

The previous prime is 1002111967. The next prime is 1002111973. The reversal of 1002111972 is 2791112001.

It is not an unprimeable number, because it can be changed into a prime (1002111973) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 12072 + ... + 46367.

It is an arithmetic number, because the mean of its divisors is an integer number (97497400).

Almost surely, 2^1002111972 is an apocalyptic number.

1002111972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1002111972 is an abundant number, since it is smaller than the sum of its proper divisors (1337825628).

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

1002111972 is a wasteful number, since it uses less digits than its factorization.

1002111972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59875 (or 59873 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 24.

The square root of 1002111972 is about 31656.1521982695. The cubic root of 1002111972 is about 1000.7034956445.

Adding to 1002111972 its reverse (2791112001), we get a palindrome (3793223973).

The spelling of 1002111972 in words is "one billion, two million, one hundred eleven thousand, nine hundred seventy-two".