221010211111122 has 32 divisors (see below), whose sum is σ = 493705183656960. Its totient is φ = 73284363192240.

The previous prime is 221010211111099. The next prime is 221010211111153. The reversal of 221010211111122 is 221111112010122.

It is a happy number.

221010211111122 is a `hidden beast` number, since 2 + 210 + 10 + 211 + 111 + 122 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 221010211111095 and 221010211111104.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10714077873 + ... + 10714098500.

It is an arithmetic number, because the mean of its divisors is an integer number (15428286989280).

Almost surely, 2^{221010211111122} is an apocalyptic number.

221010211111122 is an abundant number, since it is smaller than the sum of its proper divisors (272694972545838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221010211111122 is a wasteful number, since it uses less digits than its factorization.

221010211111122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21428176575 (or 21428176569 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 221010211111122 its reverse (221111112010122), we get a palindrome (442121323121244).

The spelling of 221010211111122 in words is "two hundred twenty-one trillion, ten billion, two hundred eleven million, one hundred eleven thousand, one hundred twenty-two".