21022002182 has 4 divisors (see below), whose sum is σ = 31533003276. Its totient is φ = 10511001090.

The previous prime is 21022002181. The next prime is 21022002271. The reversal of 21022002182 is 28120022012.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×21022002182² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022002181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5255500544 + ... + 5255500547.

It is an arithmetic number, because the mean of its divisors is an integer number (7883250819).

Almost surely, 2^21022002182 is an apocalyptic number.

21022002182 is a deficient number, since it is larger than the sum of its proper divisors (10511001094).

21022002182 is a wasteful number, since it uses less digits than its factorization.

21022002182 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10511001093.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 21022002182 its reverse (28120022012), we get a palindrome (49142024194).

The spelling of 21022002182 in words is "twenty-one billion, twenty-two million, two thousand, one hundred eighty-two".