20111222210 has 16 divisors (see below), whose sum is σ = 36209396736. Its totient is φ = 8042445168.

The previous prime is 20111222203. The next prime is 20111222233. The reversal of 20111222210 is 1222211102.

It is a super-2 number, since 2×20111222210² (a number of 21 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, 213812 + ... + 293151.

It is an arithmetic number, because the mean of its divisors is an integer number (2263087296).

Almost surely, 2^20111222210 is an apocalyptic number.

20111222210 is a deficient number, since it is larger than the sum of its proper divisors (16098174526).

20111222210 is a wasteful number, since it uses less digits than its factorization.

20111222210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510937.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20111222210 its reverse (1222211102), we get a palindrome (21333433312).

It can be divided in two parts, 201112 and 22210, that added together give a palindrome (223322).

The spelling of 20111222210 in words is "twenty billion, one hundred eleven million, two hundred twenty-two thousand, two hundred ten".