1001021221022 has 16 divisors (see below), whose sum is σ = 1503164382720. Its totient is φ = 499966722432.

The previous prime is 1001021221003. The next prime is 1001021221049. The reversal of 1001021221022 is 2201221201001.

It is a junction number, because it is equal to n+sod(n) for n = 1001021220988 and 1001021221006.

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, 6875978 + ... + 7020050.

It is an arithmetic number, because the mean of its divisors is an integer number (93947773920).

Almost surely, 2^{1001021221022} is an apocalyptic number.

1001021221022 is a deficient number, since it is larger than the sum of its proper divisors (502143161698).

1001021221022 is a wasteful number, since it uses less digits than its factorization.

1001021221022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147827.

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

Adding to 1001021221022 its reverse (2201221201001), we get a palindrome (3202242422023).

The spelling of 1001021221022 in words is "one trillion, one billion, twenty-one million, two hundred twenty-one thousand, twenty-two".