2102201121210 has 128 divisors (see below), whose sum is σ = 5174805934080. Its totient is φ = 546303377664.

The previous prime is 2102201121127. The next prime is 2102201121217. The reversal of 2102201121210 is 121211022012.

It is a super-2 number, since 2×2102201121210² (a number of 25 digits) contains 22 as substring.

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 2102201121210.

It is not an unprimeable number, because it can be changed into a prime (2102201121217) 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, 346494597 + ... + 346500663.

It is an arithmetic number, because the mean of its divisors is an integer number (40428171360).

Almost surely, 2^{2102201121210} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2102201121210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2587402967040).

2102201121210 is an abundant number, since it is smaller than the sum of its proper divisors (3072604812870).

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

2102201121210 is a wasteful number, since it uses less digits than its factorization.

2102201121210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7140.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2102201121210 its reverse (121211022012), we get a palindrome (2223412143222).

The spelling of 2102201121210 in words is "two trillion, one hundred two billion, two hundred one million, one hundred twenty-one thousand, two hundred ten".