21022212021010 has 32 divisors (see below), whose sum is σ = 38660947384320. Its totient is φ = 8226594825792.

The previous prime is 21022212020911. The next prime is 21022212021011. The reversal of 21022212021010 is 1012021222012.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21022212021011) 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, 8031490 + ... + 10322269.

It is an arithmetic number, because the mean of its divisors is an integer number (1208154605760).

Almost surely, 2^{21022212021010} is an apocalyptic number.

21022212021010 is a deficient number, since it is larger than the sum of its proper divisors (17638735363310).

21022212021010 is a wasteful number, since it uses less digits than its factorization.

21022212021010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18356250.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21022212021010 its reverse (1012021222012), we get a palindrome (22034233243022).

The spelling of 21022212021010 in words is "twenty-one trillion, twenty-two billion, two hundred twelve million, twenty-one thousand, ten".