11211210111210 has 32 divisors (see below), whose sum is σ = 26993421666432. Its totient is φ = 2980042985280.

The previous prime is 11211210111137. The next prime is 11211210111253. The reversal of 11211210111210 is 1211101211211.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 11211210111210.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 600805789 + ... + 600824448.

It is an arithmetic number, because the mean of its divisors is an integer number (843544427076).

Almost surely, 2^{11211210111210} is an apocalyptic number.

11211210111210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11211210111210 is an abundant number, since it is smaller than the sum of its proper divisors (15782211555222).

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

11211210111210 is a wasteful number, since it uses less digits than its factorization.

11211210111210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201630558.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 11211210111210 its reverse (1211101211211), we get a palindrome (12422311322421).

The spelling of 11211210111210 in words is "eleven trillion, two hundred eleven billion, two hundred ten million, one hundred eleven thousand, two hundred ten".