2202143021 has 4 divisors (see below), whose sum is σ = 2371538652. Its totient is φ = 2032747392.

The previous prime is 2202143011. The next prime is 2202143071. The reversal of 2202143021 is 1203412022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1203412022 = 2 ⋅601706011.

It can be written as a sum of positive squares in 2 ways, for example, as 455822500 + 1746320521 = 21350^2 + 41789^2 .

It is not a de Polignac number, because 2202143021 - 2²⁶ = 2135034157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2202143011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84697796 + ... + 84697821.

It is an arithmetic number, because the mean of its divisors is an integer number (592884663).

Almost surely, 2^2202143021 is an apocalyptic number.

It is an amenable number.

2202143021 is a deficient number, since it is larger than the sum of its proper divisors (169395631).

2202143021 is a wasteful number, since it uses less digits than its factorization.

2202143021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169395630.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2202143021 is about 46926.9967183070. The cubic root of 2202143021 is about 1301.0136120438.

Adding to 2202143021 its reverse (1203412022), we get a palindrome (3405555043).

The spelling of 2202143021 in words is "two billion, two hundred two million, one hundred forty-three thousand, twenty-one".