20211111000120 has 64 divisors (see below), whose sum is σ = 64199999653920. Its totient is φ = 5072592564224.

The previous prime is 20211111000109. The next prime is 20211111000131. The reversal of 20211111000120 is 2100011111202.

It is an interprime number because it is at equal distance from previous prime (20211111000109) and next prime (20211111000131).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 20211111000096 and 20211111000105.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4953701637 + ... + 4953705716.

Almost surely, 2^{20211111000120} is an apocalyptic number.

20211111000120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20211111000120 is an abundant number, since it is smaller than the sum of its proper divisors (43988888653800).

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

20211111000120 is a wasteful number, since it uses less digits than its factorization.

20211111000120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9907407384 (or 9907407380 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20211111000120 its reverse (2100011111202), we get a palindrome (22311122111322).

The spelling of 20211111000120 in words is "twenty trillion, two hundred eleven billion, one hundred eleven million, one hundred twenty", and thus it is an aban number.