1022221001012 has 6 divisors (see below), whose sum is σ = 1788886751778. Its totient is φ = 511110500504.

The previous prime is 1022221000991. The next prime is 1022221001029. The reversal of 1022221001012 is 2101001222201.

It can be written as a sum of positive squares in only one way, i.e., 703226479396 + 318994521616 = 838586^2 + 564796^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127777625123 + ... + 127777625130.

It is an arithmetic number, because the mean of its divisors is an integer number (298147791963).

Almost surely, 2^{1022221001012} is an apocalyptic number.

It is an amenable number.

1022221001012 is a deficient number, since it is larger than the sum of its proper divisors (766665750766).

1022221001012 is a wasteful number, since it uses less digits than its factorization.

1022221001012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255555250257 (or 255555250255 counting only the distinct ones).

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

Adding to 1022221001012 its reverse (2101001222201), we get a palindrome (3123222223213).

The spelling of 1022221001012 in words is "one trillion, twenty-two billion, two hundred twenty-one million, one thousand, twelve".