1002111212 has 6 divisors (see below), whose sum is σ = 1753694628.
Its totient is φ = 501055604.
The previous prime is 1002111203. The next prime is 1002111277. The reversal of 1002111212 is 2121112001.
It is a super-2 number, since 2×10021112122 = 2008453762432217888, which contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 1002111193 and 1002111202.
It is an unprimeable number.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125263898 + ... + 125263905.
It is an arithmetic number, because the mean of its divisors is an integer number (292282438).
Almost surely, 21002111212 is an apocalyptic number.
It is an amenable number.
1002111212 is a deficient number, since it is larger than the sum of its proper divisors (751583416).
1002111212 is a wasteful number, since it uses less digits than its factorization.
1002111212 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 250527807 (or 250527805 counting only the distinct ones).
The product of its (nonzero) digits is 8, while the sum is 11.
The square root of 1002111212 is about 31656.1401942814.
The cubic root of 1002111212 is about 1000.7032426672.
Adding to 1002111212 its reverse (2121112001), we get a palindrome (3123223213).
The spelling of 1002111212 in words is "one billion, two million, one hundred eleven thousand, two hundred twelve".