1100021211210 has 128 divisors (see below), whose sum is σ = 2730827001600. Its totient is φ = 283464529920.

The previous prime is 1100021211143. The next prime is 1100021211217. The reversal of 1100021211210 is 121121200011.

It is a super-2 number, since 2×1100021211210² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1100021211217) 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, 25549081 + ... + 25592099.

It is an arithmetic number, because the mean of its divisors is an integer number (21334585950).

Almost surely, 2^{1100021211210} is an apocalyptic number.

1100021211210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1100021211210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1365413500800).

1100021211210 is an abundant number, since it is smaller than the sum of its proper divisors (1630805790390).

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

1100021211210 is a wasteful number, since it uses less digits than its factorization.

1100021211210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43336.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1100021211210 its reverse (121121200011), we get a palindrome (1221142411221).

The spelling of 1100021211210 in words is "one trillion, one hundred billion, twenty-one million, two hundred eleven thousand, two hundred ten".