2121101222210 has 64 divisors (see below), whose sum is σ = 4220581075200. Its totient is φ = 763406426112.

The previous prime is 2121101222203. The next prime is 2121101222213. The reversal of 2121101222210 is 122221011212.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (2121101222213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7242401 + ... + 7529579.

It is an arithmetic number, because the mean of its divisors is an integer number (65946579300).

Almost surely, 2^{2121101222210} is an apocalyptic number.

2121101222210 is a deficient number, since it is larger than the sum of its proper divisors (2099479852990).

2121101222210 is a wasteful number, since it uses less digits than its factorization.

2121101222210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289115.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2121101222210 its reverse (122221011212), we get a palindrome (2243322233422).

The spelling of 2121101222210 in words is "two trillion, one hundred twenty-one billion, one hundred one million, two hundred twenty-two thousand, two hundred ten".