3011220021 has 8 divisors (see below), whose sum is σ = 4023139104. Its totient is φ = 2003390480.

The previous prime is 3011219983. The next prime is 3011220029. The reversal of 3011220021 is 1200221103.

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 3011220021 - 2¹³ = 3011211829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3011219979 and 3011220006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3011220029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1020666 + ... + 1023611.

It is an arithmetic number, because the mean of its divisors is an integer number (502892388).

Almost surely, 2^3011220021 is an apocalyptic number.

It is an amenable number.

3011220021 is a deficient number, since it is larger than the sum of its proper divisors (1011919083).

3011220021 is a wasteful number, since it uses less digits than its factorization.

3011220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2044771.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 3011220021 is about 54874.5844722309. The cubic root of 3011220021 is about 1444.0453412622.

Adding to 3011220021 its reverse (1200221103), we get a palindrome (4211441124).

The spelling of 3011220021 in words is "three billion, eleven million, two hundred twenty thousand, twenty-one".