21222111021010 has 16 divisors (see below), whose sum is σ = 38204921275200. Its totient is φ = 8487706311216.

The previous prime is 21222111020977. The next prime is 21222111021037. The reversal of 21222111021010 is 1012011122212.

It is a super-2 number, since 2×21222111021010² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142183830 + ... + 142333009.

It is an arithmetic number, because the mean of its divisors is an integer number (2387807579700).

Almost surely, 2^{21222111021010} is an apocalyptic number.

21222111021010 is a deficient number, since it is larger than the sum of its proper divisors (16982810254190).

21222111021010 is a wasteful number, since it uses less digits than its factorization.

21222111021010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284524305.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21222111021010 its reverse (1012011122212), we get a palindrome (22234122143222).

The spelling of 21222111021010 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred eleven million, twenty-one thousand, ten".