1020112021111 has 8 divisors (see below), whose sum is σ = 1025160746960. Its totient is φ = 1015073465472.

The previous prime is 1020112021079. The next prime is 1020112021127. The reversal of 1020112021111 is 1111202110201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1020112021111 - 2⁵ = 1020112021079 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020112021091 and 1020112021100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020112021141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2341410 + ... + 2742703.

It is an arithmetic number, because the mean of its divisors is an integer number (128145093370).

Almost surely, 2^{1020112021111} is an apocalyptic number.

1020112021111 is a deficient number, since it is larger than the sum of its proper divisors (5048725849).

1020112021111 is an equidigital number, since it uses as much as digits as its factorization.

1020112021111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5085105.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1020112021111 its reverse (1111202110201), we get a palindrome (2131314131312).

The spelling of 1020112021111 in words is "one trillion, twenty billion, one hundred twelve million, twenty-one thousand, one hundred eleven".