21222122002210 has 32 divisors (see below), whose sum is σ = 40210577668800. Its totient is φ = 8042019036480.

The previous prime is 21222122002177. The next prime is 21222122002231. The reversal of 21222122002210 is 1220022122212.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58946445 + ... + 59305375.

It is an arithmetic number, because the mean of its divisors is an integer number (1256580552150).

Almost surely, 2^{21222122002210} is an apocalyptic number.

21222122002210 is a deficient number, since it is larger than the sum of its proper divisors (18988455666590).

21222122002210 is a wasteful number, since it uses less digits than its factorization.

21222122002210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670146.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 21222122002210 its reverse (1220022122212), we get a palindrome (22442144124422).

It can be divided in two parts, 21222122002 and 210, that added together give a palindrome (21222122212).

The spelling of 21222122002210 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred twenty-two million, two thousand, two hundred ten".