1001210022221 has 16 divisors (see below), whose sum is σ = 1036187762688. Its totient is φ = 966401074800.

The previous prime is 1001210022203. The next prime is 1001210022227. The reversal of 1001210022221 is 1222200121001.

It is a cyclic number.

It is not a de Polignac number, because 1001210022221 - 2³⁴ = 984030153037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1001210022196 and 1001210022205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001210022227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63897830 + ... + 63913496.

It is an arithmetic number, because the mean of its divisors is an integer number (64761735168).

Almost surely, 2^{1001210022221} is an apocalyptic number.

It is an amenable number.

1001210022221 is a deficient number, since it is larger than the sum of its proper divisors (34977740467).

1001210022221 is a wasteful number, since it uses less digits than its factorization.

1001210022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20912.

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

Adding to 1001210022221 its reverse (1222200121001), we get a palindrome (2223410143222).

The spelling of 1001210022221 in words is "one trillion, one billion, two hundred ten million, twenty-two thousand, two hundred twenty-one".