6021550121 has 4 divisors (see below), whose sum is σ = 6283356672. Its totient is φ = 5759743572.

The previous prime is 6021550103. The next prime is 6021550123. The reversal of 6021550121 is 1210551206.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6021550121 is a prime.

It is a super-2 number, since 2×6021550121² = 72518131719430229282, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 261806527 = 6021550121 / (6 + 0 + 2 + 1 + 5 + 5 + 0 + 1 + 2 + 1).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6021550123) 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, 130903241 + ... + 130903286.

It is an arithmetic number, because the mean of its divisors is an integer number (1570839168).

Almost surely, 2^6021550121 is an apocalyptic number.

It is an amenable number.

6021550121 is a deficient number, since it is larger than the sum of its proper divisors (261806551).

6021550121 is a wasteful number, since it uses less digits than its factorization.

6021550121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261806550.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 6021550121 is about 77598.6476750723. The cubic root of 6021550121 is about 1819.2935028034.

The spelling of 6021550121 in words is "six billion, twenty-one million, five hundred fifty thousand, one hundred twenty-one".