2101121202210 has 64 divisors (see below), whose sum is σ = 5154980880384. Its totient is φ = 547845464000.

The previous prime is 2101121202209. The next prime is 2101121202233. The reversal of 2101121202210 is 122021211012.

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 2101121202210.

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, 731035 + ... + 2176385.

It is an arithmetic number, because the mean of its divisors is an integer number (80546576256).

Almost surely, 2^{2101121202210} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2101121202210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2577490440192).

2101121202210 is an abundant number, since it is smaller than the sum of its proper divisors (3053859678174).

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

2101121202210 is a wasteful number, since it uses less digits than its factorization.

2101121202210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1446439.

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

Adding to 2101121202210 its reverse (122021211012), we get a palindrome (2223142413222).

The spelling of 2101121202210 in words is "two trillion, one hundred one billion, one hundred twenty-one million, two hundred two thousand, two hundred ten".