1000020102111 has 12 divisors (see below), whose sum is σ = 1444805676600. Its totient is φ = 666526746960.

The previous prime is 1000020102097. The next prime is 1000020102127. The reversal of 1000020102111 is 1112010200001.

It is a happy number.

It is not a de Polignac number, because 1000020102111 - 2¹¹ = 1000020100063 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1000020102093 and 1000020102102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000020101111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12735445 + ... + 12813726.

It is an arithmetic number, because the mean of its divisors is an integer number (120400473050).

Almost surely, 2^{1000020102111} is an apocalyptic number.

1000020102111 is a deficient number, since it is larger than the sum of its proper divisors (444785574489).

1000020102111 is a wasteful number, since it uses less digits than its factorization.

1000020102111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25553526 (or 25553523 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1000020102111 its reverse (1112010200001), we get a palindrome (2112030302112).

The spelling of 1000020102111 in words is "one trillion, twenty million, one hundred two thousand, one hundred eleven".