2111221220210 has 32 divisors (see below), whose sum is σ = 3881169499392. Its totient is φ = 826495939840.

The previous prime is 2111221220201. The next prime is 2111221220219. The reversal of 2111221220210 is 120221221112.

It is an interprime number because it is at equal distance from previous prime (2111221220201) and next prime (2111221220219).

It is not an unprimeable number, because it can be changed into a prime (2111221220219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29635994 + ... + 29707146.

It is an arithmetic number, because the mean of its divisors is an integer number (121286546856).

Almost surely, 2^{2111221220210} is an apocalyptic number.

2111221220210 is a deficient number, since it is larger than the sum of its proper divisors (1769948279182).

2111221220210 is a wasteful number, since it uses less digits than its factorization.

2111221220210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134338.

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

Adding to 2111221220210 its reverse (120221221112), we get a palindrome (2231442441322).

The spelling of 2111221220210 in words is "two trillion, one hundred eleven billion, two hundred twenty-one million, two hundred twenty thousand, two hundred ten".