10221121220111 has 8 divisors (see below), whose sum is σ = 10226756736000. Its totient is φ = 10215486415288.

The previous prime is 10221121220077. The next prime is 10221121220137. The reversal of 10221121220111 is 11102212112201.

10221121220111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10221121220111 - 2⁶ = 10221121220047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10221121220111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221121220171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29981390 + ... + 30320388.

It is an arithmetic number, because the mean of its divisors is an integer number (1278344592000).

Almost surely, 2^{10221121220111} is an apocalyptic number.

10221121220111 is a deficient number, since it is larger than the sum of its proper divisors (5635515889).

10221121220111 is a wasteful number, since it uses less digits than its factorization.

10221121220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355533.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 10221121220111 its reverse (11102212112201), we get a palindrome (21323333332312).

The spelling of 10221121220111 in words is "ten trillion, two hundred twenty-one billion, one hundred twenty-one million, two hundred twenty thousand, one hundred eleven".