2121220210210 has 32 divisors (see below), whose sum is σ = 3950043796800. Its totient is φ = 819191405760.

The previous prime is 2121220210169. The next prime is 2121220210211. The reversal of 2121220210210 is 120120221212.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2121220210211) 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, 6454861 + ... + 6775519.

It is an arithmetic number, because the mean of its divisors is an integer number (123438868650).

Almost surely, 2^{2121220210210} is an apocalyptic number.

2121220210210 is a deficient number, since it is larger than the sum of its proper divisors (1828823586590).

2121220210210 is a wasteful number, since it uses less digits than its factorization.

2121220210210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343506.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2121220210210 its reverse (120120221212), we get a palindrome (2241340431422).

The spelling of 2121220210210 in words is "two trillion, one hundred twenty-one billion, two hundred twenty million, two hundred ten thousand, two hundred ten".