10221121211022 has 24 divisors (see below), whose sum is σ = 22148595954576. Its totient is φ = 3406604506656.

The previous prime is 10221121210999. The next prime is 10221121211053. The reversal of 10221121211022 is 22011212112201.

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 = 10221121210986 and 10221121211004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36180138 + ... + 36461549.

It is an arithmetic number, because the mean of its divisors is an integer number (922858164774).

Almost surely, 2^{10221121211022} is an apocalyptic number.

10221121211022 is an abundant number, since it is smaller than the sum of its proper divisors (11927474743554).

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

10221121211022 is a wasteful number, since it uses less digits than its factorization.

10221121211022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72649512 (or 72649509 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 10221121211022 its reverse (22011212112201), we get a palindrome (32232333323223).

The spelling of 10221121211022 in words is "ten trillion, two hundred twenty-one billion, one hundred twenty-one million, two hundred eleven thousand, twenty-two".