10211111000020 has 48 divisors (see below), whose sum is σ = 25297204036608. Its totient is φ = 3388018394880.

The previous prime is 10211111000009. The next prime is 10211111000039. The reversal of 10211111000020 is 2000011111201.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 10211110999970 and 10211111000006.

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 15 ways as a sum of consecutive naturals, for example, 1176390937 + ... + 1176399616.

It is an arithmetic number, because the mean of its divisors is an integer number (527025084096).

Almost surely, 2^{10211111000020} is an apocalyptic number.

10211111000020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10211111000020 is an abundant number, since it is smaller than the sum of its proper divisors (15086093036588).

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

10211111000020 is a wasteful number, since it uses less digits than its factorization.

10211111000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2352790600 (or 2352790598 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 10211111000020 its reverse (2000011111201), we get a palindrome (12211122111221).

The spelling of 10211111000020 in words is "ten trillion, two hundred eleven billion, one hundred eleven million, twenty", and thus it is an aban number.