11221012210 has 64 divisors (see below), whose sum is σ = 21431329920. Its totient is φ = 4218255360.

The previous prime is 11221012207. The next prime is 11221012213. The reversal of 11221012210 is 1221012211.

It is an interprime number because it is at equal distance from previous prime (11221012207) and next prime (11221012213).

It is a super-2 number, since 2×11221012210² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11221012213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19651225 + ... + 19651795.

It is an arithmetic number, because the mean of its divisors is an integer number (334864530).

Almost surely, 2^11221012210 is an apocalyptic number.

11221012210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11221012210 is a deficient number, since it is larger than the sum of its proper divisors (10210317710).

11221012210 is a wasteful number, since it uses less digits than its factorization.

11221012210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1243.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 11221012210 its reverse (1221012211), we get a palindrome (12442024421).

Subtracting from 11221012210 its reverse (1221012211), we obtain a palindrome (9999999999).

The spelling of 11221012210 in words is "eleven billion, two hundred twenty-one million, twelve thousand, two hundred ten".