11101221211210 has 128 divisors (see below), whose sum is σ = 22734428371200. Its totient is φ = 3869055590400.

The previous prime is 11101221211207. The next prime is 11101221211211. The reversal of 11101221211210 is 1211212210111.

It is a super-2 number, since 2×11101221211210² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11101221211211) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 808589626 + ... + 808603354.

It is an arithmetic number, because the mean of its divisors is an integer number (177612721650).

Almost surely, 2^{11101221211210} is an apocalyptic number.

11101221211210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11101221211210 is an abundant number, since it is smaller than the sum of its proper divisors (11633207159990).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11101221211210 is a wasteful number, since it uses less digits than its factorization.

11101221211210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14936.

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

Adding to 11101221211210 its reverse (1211212210111), we get a palindrome (12312433421321).

The spelling of 11101221211210 in words is "eleven trillion, one hundred one billion, two hundred twenty-one million, two hundred eleven thousand, two hundred ten".