1001001223212 has 24 divisors (see below), whose sum is σ = 2340871470000. Its totient is φ = 332923938816.

The previous prime is 1001001223171. The next prime is 1001001223219. The reversal of 1001001223212 is 2123221001001.

It is a junction number, because it is equal to n+sod(n) for n = 1001001223191 and 1001001223200.

It is not an unprimeable number, because it can be changed into a prime (1001001223219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92886337 + ... + 92897112.

It is an arithmetic number, because the mean of its divisors is an integer number (97536311250).

Almost surely, 2^{1001001223212} is an apocalyptic number.

1001001223212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1001001223212 is an abundant number, since it is smaller than the sum of its proper divisors (1339870246788).

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

1001001223212 is a wasteful number, since it uses less digits than its factorization.

1001001223212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185783905 (or 185783903 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1001001223212 its reverse (2123221001001), we get a palindrome (3124222224213).

The spelling of 1001001223212 in words is "one trillion, one billion, one million, two hundred twenty-three thousand, two hundred twelve".