1022020133 has 4 divisors (see below), whose sum is σ = 1022821740. Its totient is φ = 1021218528.

The previous prime is 1022020099. The next prime is 1022020151. The reversal of 1022020133 is 3310202201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3310202201 = 67 ⋅49406003.

It can be written as a sum of positive squares in 2 ways, for example, as 660335809 + 361684324 = 25697^2 + 19018^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022020133 - 2¹⁰ = 1022019109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022020193) 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, 398888 + ... + 401441.

It is an arithmetic number, because the mean of its divisors is an integer number (255705435).

Almost surely, 2^1022020133 is an apocalyptic number.

It is an amenable number.

1022020133 is a deficient number, since it is larger than the sum of its proper divisors (801607).

1022020133 is an equidigital number, since it uses as much as digits as its factorization.

1022020133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801606.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1022020133 is about 31969.0496105217. The cubic root of 1022020133 is about 1007.2868176507.

Adding to 1022020133 its reverse (3310202201), we get a palindrome (4332222334).

The spelling of 1022020133 in words is "one billion, twenty-two million, twenty thousand, one hundred thirty-three".