1020112021 has 8 divisors (see below), whose sum is σ = 1048860288. Its totient is φ = 991548000.

The previous prime is 1020112003. The next prime is 1020112057. The reversal of 1020112021 is 1202110201.

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 1020112021 - 2¹³ = 1020103829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020111989 and 1020112007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020112921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34795 + ... + 57016.

It is an arithmetic number, because the mean of its divisors is an integer number (131107536).

Almost surely, 2^1020112021 is an apocalyptic number.

It is an amenable number.

1020112021 is a deficient number, since it is larger than the sum of its proper divisors (28748267).

1020112021 is an equidigital number, since it uses as much as digits as its factorization.

1020112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92123.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1020112021 is about 31939.1925539767. The cubic root of 1020112021 is about 1006.6595588264.

Adding to 1020112021 its reverse (1202110201), we get a palindrome (2222222222).

It can be divided in two parts, 10201 and 12021, that multiplied together give a palindrome (122626221).

The spelling of 1020112021 in words is "one billion, twenty million, one hundred twelve thousand, twenty-one".