1001122201021 has 16 divisors (see below), whose sum is σ = 1071955874560. Its totient is φ = 932128015680.

The previous prime is 1001122201007. The next prime is 1001122201043. The reversal of 1001122201021 is 1201022211001.

It is a cyclic number.

It is not a de Polignac number, because 1001122201021 - 2⁹ = 1001122200509 is a prime.

It is a super-2 number, since 2×1001122201021² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1001122200992 and 1001122201010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001122207021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1084540 + ... + 1782826.

It is an arithmetic number, because the mean of its divisors is an integer number (66997242160).

Almost surely, 2^{1001122201021} is an apocalyptic number.

It is an amenable number.

1001122201021 is a deficient number, since it is larger than the sum of its proper divisors (70833673539).

1001122201021 is a wasteful number, since it uses less digits than its factorization.

1001122201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699604.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1001122201021 its reverse (1201022211001), we get a palindrome (2202144412022).

The spelling of 1001122201021 in words is "one trillion, one billion, one hundred twenty-two million, two hundred one thousand, twenty-one".