1012001022221 has 16 divisors (see below), whose sum is σ = 1181224525824. Its totient is φ = 848941876464.

The previous prime is 1012001022203. The next prime is 1012001022269. The reversal of 1012001022221 is 1222201002101.

It is a cyclic number.

It is not a de Polignac number, because 1012001022221 - 2¹⁰ = 1012001021197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1012001022196 and 1012001022205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012001022271) 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, 14085836 + ... + 14157498.

It is an arithmetic number, because the mean of its divisors is an integer number (73826532864).

Almost surely, 2^{1012001022221} is an apocalyptic number.

It is an amenable number.

1012001022221 is a deficient number, since it is larger than the sum of its proper divisors (169223503603).

1012001022221 is an equidigital number, since it uses as much as digits as its factorization.

1012001022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114640.

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

Adding to 1012001022221 its reverse (1222201002101), we get a palindrome (2234202024322).

The spelling of 1012001022221 in words is "one trillion, twelve billion, one million, twenty-two thousand, two hundred twenty-one".