2111201211210 has 128 divisors (see below), whose sum is σ = 6274423572480. Its totient is φ = 442707399936.

The previous prime is 2111201211191. The next prime is 2111201211211. The reversal of 2111201211210 is 121121021112.

It is a happy number.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2111201211210.

It is not an unprimeable number, because it can be changed into a prime (2111201211211) 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, 1927200 + ... + 2817179.

It is an arithmetic number, because the mean of its divisors is an integer number (49018934160).

Almost surely, 2^{2111201211210} is an apocalyptic number.

2111201211210 is an abundant number, since it is smaller than the sum of its proper divisors (4163222361270).

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

2111201211210 is a wasteful number, since it uses less digits than its factorization.

2111201211210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4744572.

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

Adding to 2111201211210 its reverse (121121021112), we get a palindrome (2232322232322).

The spelling of 2111201211210 in words is "two trillion, one hundred eleven billion, two hundred one million, two hundred eleven thousand, two hundred ten".