11211112210 has 16 divisors (see below), whose sum is σ = 20188109376. Its totient is φ = 4482643248.

The previous prime is 11211112183. The next prime is 11211112223. The reversal of 11211112210 is 1221111211.

It is a happy number.

It is a super-2 number, since 2×11211112210² (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, 198924 + ... + 248983.

It is an arithmetic number, because the mean of its divisors is an integer number (1261756836).

Almost surely, 2^11211112210 is an apocalyptic number.

11211112210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11211112210 is a deficient number, since it is larger than the sum of its proper divisors (8976997166).

11211112210 is a wasteful number, since it uses less digits than its factorization.

11211112210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450417.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11211112210 its reverse (1221111211), we get a palindrome (12432223421).

Subtracting from 11211112210 its reverse (1221111211), we obtain a palindrome (9990000999).

The spelling of 11211112210 in words is "eleven billion, two hundred eleven million, one hundred twelve thousand, two hundred ten".