1020112111021 has 8 divisors (see below), whose sum is σ = 1070281561088. Its totient is φ = 971021574000.

The previous prime is 1020112111019. The next prime is 1020112111121. The reversal of 1020112111021 is 1201112110201.

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 1020112111021 - 2¹ = 1020112111019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1020112110992 and 1020112111010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020112111121) 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, 269726325 + ... + 269730106.

It is an arithmetic number, because the mean of its divisors is an integer number (133785195136).

Almost surely, 2^{1020112111021} is an apocalyptic number.

It is an amenable number.

1020112111021 is a deficient number, since it is larger than the sum of its proper divisors (50169450067).

1020112111021 is an equidigital number, since it uses as much as digits as its factorization.

1020112111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539456523.

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

Adding to 1020112111021 its reverse (1201112110201), we get a palindrome (2221224221222).

The spelling of 1020112111021 in words is "one trillion, twenty billion, one hundred twelve million, one hundred eleven thousand, twenty-one".