1011221212012 has 12 divisors (see below), whose sum is σ = 1930513223016. Its totient is φ = 459646005440.

The previous prime is 1011221211989. The next prime is 1011221212021. The reversal of 1011221212012 is 2102121221101.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11491150093 + ... + 11491150180.

It is an arithmetic number, because the mean of its divisors is an integer number (160876101918).

Almost surely, 2^{1011221212012} is an apocalyptic number.

It is an amenable number.

1011221212012 is a deficient number, since it is larger than the sum of its proper divisors (919292011004).

1011221212012 is a wasteful number, since it uses less digits than its factorization.

1011221212012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22982300288 (or 22982300286 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1011221212012 its reverse (2102121221101), we get a palindrome (3113342433113).

The spelling of 1011221212012 in words is "one trillion, eleven billion, two hundred twenty-one million, two hundred twelve thousand, twelve".