1012121221012 has 36 divisors (see below), whose sum is σ = 2039280286176. Its totient is φ = 435841667280.

The previous prime is 1012121221009. The next prime is 1012121221049. The reversal of 1012121221012 is 2101221212101.

1012121221012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31843888 + ... + 31875655.

It is an arithmetic number, because the mean of its divisors is an integer number (56646674616).

Almost surely, 2^{1012121221012} is an apocalyptic number.

It is an amenable number.

1012121221012 is an abundant number, since it is smaller than the sum of its proper divisors (1027159065164).

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

1012121221012 is a wasteful number, since it uses less digits than its factorization.

1012121221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63719596 (or 63719575 counting only the distinct ones).

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

Adding to 1012121221012 its reverse (2101221212101), we get a palindrome (3113342433113).

The spelling of 1012121221012 in words is "one trillion, twelve billion, one hundred twenty-one million, two hundred twenty-one thousand, twelve".