10011022221221 has 16 divisors (see below), whose sum is σ = 11479259979264. Its totient is φ = 8552311411824.

The previous prime is 10011022221199. The next prime is 10011022221227. The reversal of 10011022221221 is 12212222011001.

It is a cyclic number.

It is not a de Polignac number, because 10011022221221 - 2¹⁰ = 10011022220197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10011022221221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10011022221227) 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, 31135946 + ... + 31455828.

It is an arithmetic number, because the mean of its divisors is an integer number (717453748704).

Almost surely, 2^{10011022221221} is an apocalyptic number.

It is an amenable number.

10011022221221 is a deficient number, since it is larger than the sum of its proper divisors (1468237758043).

10011022221221 is a wasteful number, since it uses less digits than its factorization.

10011022221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334760.

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

Adding to 10011022221221 its reverse (12212222011001), we get a palindrome (22223244232222).

The spelling of 10011022221221 in words is "ten trillion, eleven billion, twenty-two million, two hundred twenty-one thousand, two hundred twenty-one".