2011221212012 has 12 divisors (see below), whose sum is σ = 3519671597400. Its totient is φ = 1005600755616.

The previous prime is 2011221211963. The next prime is 2011221212017. The reversal of 2011221212012 is 2102121221102.

It is not an unprimeable number, because it can be changed into a prime (2011221212017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1993262 + ... + 2827637.

It is an arithmetic number, because the mean of its divisors is an integer number (293305966450).

Almost surely, 2^{2011221212012} is an apocalyptic number.

It is an amenable number.

2011221212012 is a deficient number, since it is larger than the sum of its proper divisors (1508450385388).

2011221212012 is a wasteful number, since it uses less digits than its factorization.

2011221212012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4925200 (or 4925198 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2011221212012 its reverse (2102121221102), we get a palindrome (4113342433114).

The spelling of 2011221212012 in words is "two trillion, eleven billion, two hundred twenty-one million, two hundred twelve thousand, twelve".