1021112221022 has 16 divisors (see below), whose sum is σ = 1621795407120. Its totient is φ = 480514823808.

The previous prime is 1021112220917. The next prime is 1021112221057. The reversal of 1021112221022 is 2201222111201.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1925804 + ... + 2398112.

It is an arithmetic number, because the mean of its divisors is an integer number (101362212945).

Almost surely, 2^{1021112221022} is an apocalyptic number.

1021112221022 is a deficient number, since it is larger than the sum of its proper divisors (600683186098).

1021112221022 is a wasteful number, since it uses less digits than its factorization.

1021112221022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535915.

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

Adding to 1021112221022 its reverse (2201222111201), we get a palindrome (3222334332223).

The spelling of 1021112221022 in words is "one trillion, twenty-one billion, one hundred twelve million, two hundred twenty-one thousand, twenty-two".