1020111401 has 4 divisors (see below), whose sum is σ = 1080117972. Its totient is φ = 960104832.

The previous prime is 1020111353. The next prime is 1020111419. The reversal of 1020111401 is 1041110201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 462207001 + 557904400 = 21499^2 + 23620^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020111401 - 2²⁶ = 953002537 is a prime.

It is a super-3 number, since 3×1020111401³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1020114401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30003260 + ... + 30003293.

It is an arithmetic number, because the mean of its divisors is an integer number (270029493).

Almost surely, 2^1020111401 is an apocalyptic number.

It is an amenable number.

1020111401 is a deficient number, since it is larger than the sum of its proper divisors (60006571).

1020111401 is an equidigital number, since it uses as much as digits as its factorization.

1020111401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60006570.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1020111401 is about 31939.1828480317. The cubic root of 1020111401 is about 1006.6593548850.

Adding to 1020111401 its reverse (1041110201), we get a palindrome (2061221602).

The spelling of 1020111401 in words is "one billion, twenty million, one hundred eleven thousand, four hundred one".