2402012221 has 32 divisors (see below), whose sum is σ = 2872516608. Its totient is φ = 1966135680.

The previous prime is 2402012219. The next prime is 2402012227. The reversal of 2402012221 is 1222102042.

It is a cyclic number.

It is not a de Polignac number, because 2402012221 - 2¹ = 2402012219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2402012195 and 2402012204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2402012227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2473266 + ... + 2474236.

It is an arithmetic number, because the mean of its divisors is an integer number (89766144).

Almost surely, 2^2402012221 is an apocalyptic number.

It is an amenable number.

2402012221 is a deficient number, since it is larger than the sum of its proper divisors (470504387).

2402012221 is a wasteful number, since it uses less digits than its factorization.

2402012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 2402012221 is about 49010.3276973333. The cubic root of 2402012221 is about 1339.2399753725.

Adding to 2402012221 its reverse (1222102042), we get a palindrome (3624114263).

The spelling of 2402012221 in words is "two billion, four hundred two million, twelve thousand, two hundred twenty-one".