20201122210122 has 64 divisors (see below), whose sum is σ = 51316265548800. Its totient is φ = 5770418531760.

The previous prime is 20201122210121. The next prime is 20201122210123. The reversal of 20201122210122 is 22101222110202.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20201122210121) and next prime (20201122210123).

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 = 20201122210095 and 20201122210104.

It is not an unprimeable number, because it can be changed into a prime (20201122210121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4518204 + ... + 7798487.

It is an arithmetic number, because the mean of its divisors is an integer number (801816649200).

Almost surely, 2^{20201122210122} is an apocalyptic number.

20201122210122 is an abundant number, since it is smaller than the sum of its proper divisors (31115143338678).

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

20201122210122 is a wasteful number, since it uses less digits than its factorization.

20201122210122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12321048 (or 12321042 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20201122210122 its reverse (22101222110202), we get a palindrome (42302344320324).

The spelling of 20201122210122 in words is "twenty trillion, two hundred one billion, one hundred twenty-two million, two hundred ten thousand, one hundred twenty-two".