20221210100111 has 4 divisors (see below), whose sum is σ = 20325983209632. Its totient is φ = 20116436990592.

The previous prime is 20221210100107. The next prime is 20221210100137. The reversal of 20221210100111 is 11100101212202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20221210100111 - 2² = 20221210100107 is a prime.

It is a super-2 number, since 2×20221210100111² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20221210105111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52386554471 + ... + 52386554856.

It is an arithmetic number, because the mean of its divisors is an integer number (5081495802408).

Almost surely, 2^{20221210100111} is an apocalyptic number.

20221210100111 is a deficient number, since it is larger than the sum of its proper divisors (104773109521).

20221210100111 is a wasteful number, since it uses less digits than its factorization.

20221210100111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104773109520.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20221210100111 its reverse (11100101212202), we get a palindrome (31321311312313).

The spelling of 20221210100111 in words is "twenty trillion, two hundred twenty-one billion, two hundred ten million, one hundred thousand, one hundred eleven".