2213203021 has 16 divisors (see below), whose sum is σ = 2364813360. Its totient is φ = 2064061440.

The previous prime is 2213203019. The next prime is 2213203043. The reversal of 2213203021 is 1203023122.

2213203021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 1037741796 + 1175461225 = 32214^2 + 34285^2 .

It is a cyclic number.

It is not a de Polignac number, because 2213203021 - 2¹ = 2213203019 is a prime.

It is a super-2 number, since 2×2213203021² = 9796535224327052882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2213202986 and 2213203004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2213203621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 974275 + ... + 976543.

It is an arithmetic number, because the mean of its divisors is an integer number (147800835).

Almost surely, 2^2213203021 is an apocalyptic number.

It is an amenable number.

2213203021 is a deficient number, since it is larger than the sum of its proper divisors (151610339).

2213203021 is a wasteful number, since it uses less digits than its factorization.

2213203021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2784.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2213203021 is about 47044.6917409393. The cubic root of 2213203021 is about 1303.1880375979.

Adding to 2213203021 its reverse (1203023122), we get a palindrome (3416226143).

The spelling of 2213203021 in words is "two billion, two hundred thirteen million, two hundred three thousand, twenty-one".