11212211001210 has 32 divisors (see below), whose sum is σ = 27211658166720. Its totient is φ = 2956328293248.

The previous prime is 11212211001203. The next prime is 11212211001247. The reversal of 11212211001210 is 1210011221211.

It is a happy number.

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 11212211001210.

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, 2099662312 + ... + 2099667651.

It is an arithmetic number, because the mean of its divisors is an integer number (850364317710).

Almost surely, 2^{11212211001210} is an apocalyptic number.

11212211001210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11212211001210 is an abundant number, since it is smaller than the sum of its proper divisors (15999447165510).

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

11212211001210 is a wasteful number, since it uses less digits than its factorization.

11212211001210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4199330062.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11212211001210 its reverse (1210011221211), we get a palindrome (12422222222421).

The spelling of 11212211001210 in words is "eleven trillion, two hundred twelve billion, two hundred eleven million, one thousand, two hundred ten".