1011221021222 has 16 divisors (see below), whose sum is σ = 1523386414080. Its totient is φ = 503426128968.

The previous prime is 1011221021159. The next prime is 1011221021249. The reversal of 1011221021222 is 2221201221101.

It is a super-2 number, since 2×1011221021222² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1011221021222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3447443 + ... + 3729249.

It is an arithmetic number, because the mean of its divisors is an integer number (95211650880).

Almost surely, 2^{1011221021222} is an apocalyptic number.

1011221021222 is a deficient number, since it is larger than the sum of its proper divisors (512165392858).

1011221021222 is a wasteful number, since it uses less digits than its factorization.

1011221021222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289555.

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

Adding to 1011221021222 its reverse (2221201221101), we get a palindrome (3232422242323).

The spelling of 1011221021222 in words is "one trillion, eleven billion, two hundred twenty-one million, twenty-one thousand, two hundred twenty-two".