5365122021 has 32 divisors (see below), whose sum is σ = 9618151680. Its totient is φ = 2885442048.

The previous prime is 5365121969. The next prime is 5365122031. The reversal of 5365122021 is 1202215635.

It is a happy number.

5365122021 is a `hidden beast` number, since 5 + 3 + 651 + 2 + 2 + 0 + 2 + 1 = 666.

It is not a de Polignac number, because 5365122021 - 2⁷ = 5365121893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5365122031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 831696 + ... + 838121.

It is an arithmetic number, because the mean of its divisors is an integer number (300567240).

Almost surely, 2^5365122021 is an apocalyptic number.

5365122021 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

5365122021 is a deficient number, since it is larger than the sum of its proper divisors (4253029659).

5365122021 is a wasteful number, since it uses less digits than its factorization.

5365122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1669850 (or 1669844 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 5365122021 is about 73246.9932556962. The cubic root of 5365122021 is about 1750.6253026381.

Adding to 5365122021 its reverse (1202215635), we get a palindrome (6567337656).

The spelling of 5365122021 in words is "five billion, three hundred sixty-five million, one hundred twenty-two thousand, twenty-one".