2001001122212 has 6 divisors (see below), whose sum is σ = 3501751963878. Its totient is φ = 1000500561104.

The previous prime is 2001001122161. The next prime is 2001001122223. The reversal of 2001001122212 is 2122211001002.

It can be written as a sum of positive squares in only one way, i.e., 1986278697316 + 14722424896 = 1409354^2 + 121336^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250125140273 + ... + 250125140280.

It is an arithmetic number, because the mean of its divisors is an integer number (583625327313).

Almost surely, 2^{2001001122212} is an apocalyptic number.

It is an amenable number.

2001001122212 is a deficient number, since it is larger than the sum of its proper divisors (1500750841666).

2001001122212 is a wasteful number, since it uses less digits than its factorization.

2001001122212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500250280557 (or 500250280555 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2001001122212 its reverse (2122211001002), we get a palindrome (4123212123214).

The spelling of 2001001122212 in words is "two trillion, one billion, one million, one hundred twenty-two thousand, two hundred twelve".