210120120021122 has 16 divisors (see below), whose sum is σ = 333720542204280. Its totient is φ = 98879952307968.

The previous prime is 210120120021113. The next prime is 210120120021151. The reversal of 210120120021122 is 221120021021012.

It can be written as a sum of positive squares in 4 ways, for example, as 186050391120841 + 24069728900281 = 13640029^2 + 4906091^2 .

It is a super-2 number, since 2×210120120021122² (a number of 29 digits) contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 210120120021122.

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 7 ways as a sum of consecutive naturals, for example, 36543428 + ... + 41900624.

Almost surely, 2^{210120120021122} is an apocalyptic number.

210120120021122 is a deficient number, since it is larger than the sum of its proper divisors (123600422183158).

210120120021122 is a wasteful number, since it uses less digits than its factorization.

210120120021122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6510805.

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

Adding to 210120120021122 its reverse (221120021021012), we get a palindrome (431240141042134).

The spelling of 210120120021122 in words is "two hundred ten trillion, one hundred twenty billion, one hundred twenty million, twenty-one thousand, one hundred twenty-two".