21202210053 has 8 divisors (see below), whose sum is σ = 31410681600. Its totient is φ = 14134806684.

The previous prime is 21202210049. The next prime is 21202210061. The reversal of 21202210053 is 35001220212.

It is not a de Polignac number, because 21202210053 - 2² = 21202210049 is a prime.

It is a super-2 number, since 2×21202210053² (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 (21202211053) 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, 392633493 + ... + 392633546.

It is an arithmetic number, because the mean of its divisors is an integer number (3926335200).

Almost surely, 2^21202210053 is an apocalyptic number.

It is an amenable number.

21202210053 is a deficient number, since it is larger than the sum of its proper divisors (10208471547).

21202210053 is an equidigital number, since it uses as much as digits as its factorization.

21202210053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785267048 (or 785267042 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

Adding to 21202210053 its reverse (35001220212), we get a palindrome (56203430265).

The spelling of 21202210053 in words is "twenty-one billion, two hundred two million, two hundred ten thousand, fifty-three".