11212101210 has 64 divisors (see below), whose sum is σ = 28409846400. Its totient is φ = 2824077312.

The previous prime is 11212101209. The next prime is 11212101247. The reversal of 11212101210 is 1210121211.

It is a super-2 number, since 2×11212101210² (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 31 ways as a sum of consecutive naturals, for example, 162906 + ... + 221274.

It is an arithmetic number, because the mean of its divisors is an integer number (443903850).

Almost surely, 2^11212101210 is an apocalyptic number.

11212101210 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 11212101210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14204923200).

11212101210 is an abundant number, since it is smaller than the sum of its proper divisors (17197745190).

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

11212101210 is a wasteful number, since it uses less digits than its factorization.

11212101210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58735.

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

Adding to 11212101210 its reverse (1210121211), we get a palindrome (12422222421).

The spelling of 11212101210 in words is "eleven billion, two hundred twelve million, one hundred one thousand, two hundred ten".