2120221122210 has 40 divisors (see below), whose sum is σ = 5701039019676. Its totient is φ = 565392299040.

The previous prime is 2120221122203. The next prime is 2120221122221. The reversal of 2120221122210 is 122211220212.

It is a happy number.

2120221122210 is a `hidden beast` number, since 21 + 202 + 211 + 22 + 210 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2005200434601 + 115020687609 = 1416051^2 + 339147^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 1308777661 + ... + 1308779280.

Almost surely, 2^{2120221122210} is an apocalyptic number.

2120221122210 is an abundant number, since it is smaller than the sum of its proper divisors (3580817897466).

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

2120221122210 is a wasteful number, since it uses less digits than its factorization.

2120221122210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2617556960 (or 2617556951 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2120221122210 its reverse (122211220212), we get a palindrome (2242432342422).

The spelling of 2120221122210 in words is "two trillion, one hundred twenty billion, two hundred twenty-one million, one hundred twenty-two thousand, two hundred ten".