20221121211102 has 80 divisors (see below), whose sum is σ = 52295893844832. Its totient is φ = 5720260564800.

The previous prime is 20221121211091. The next prime is 20221121211121. The reversal of 20221121211102 is 20111212112202.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 88161093 + ... + 88390160.

Almost surely, 2^{20221121211102} is an apocalyptic number.

20221121211102 is an abundant number, since it is smaller than the sum of its proper divisors (32074772633730).

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

20221121211102 is a wasteful number, since it uses less digits than its factorization.

20221121211102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176551375 (or 176551366 counting only the distinct ones).

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

Adding to 20221121211102 its reverse (20111212112202), we get a palindrome (40332333323304).

The spelling of 20221121211102 in words is "twenty trillion, two hundred twenty-one billion, one hundred twenty-one million, two hundred eleven thousand, one hundred two".