1001022221212 has 48 divisors (see below), whose sum is σ = 1952845090560. Its totient is φ = 445793144832.

The previous prime is 1001022221153. The next prime is 1001022221219. The reversal of 1001022221212 is 2121222201001.

It is a happy number.

1001022221212 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 not an unprimeable number, because it can be changed into a prime (1001022221219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2151228 + ... + 2574844.

It is an arithmetic number, because the mean of its divisors is an integer number (40684272720).

Almost surely, 2^{1001022221212} is an apocalyptic number.

It is an amenable number.

1001022221212 is a deficient number, since it is larger than the sum of its proper divisors (951822869348).

1001022221212 is a wasteful number, since it uses less digits than its factorization.

1001022221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425230 (or 425228 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1001022221212 its reverse (2121222201001), we get a palindrome (3122244422213).

The spelling of 1001022221212 in words is "one trillion, one billion, twenty-two million, two hundred twenty-one thousand, two hundred twelve".