210022221200121 has 48 divisors (see below), whose sum is σ = 331882578780480. Its totient is φ = 126925744752000.

The previous prime is 210022221200117. The next prime is 210022221200149. The reversal of 210022221200121 is 121002122220012.

It is a happy number.

210022221200121 is a `hidden beast` number, since 2 + 100 + 22 + 221 + 200 + 121 = 666.

It is not a de Polignac number, because 210022221200121 - 2² = 210022221200117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210022221200094 and 210022221200103.

It is not an unprimeable number, because it can be changed into a prime (210022221200101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 48224491 + ... + 52398911.

It is an arithmetic number, because the mean of its divisors is an integer number (6914220391260).

Almost surely, 2^{210022221200121} is an apocalyptic number.

It is an amenable number.

210022221200121 is a deficient number, since it is larger than the sum of its proper divisors (121860357580359).

210022221200121 is a wasteful number, since it uses less digits than its factorization.

210022221200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4175878 (or 4175875 counting only the distinct ones).

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

Adding to 210022221200121 its reverse (121002122220012), we get a palindrome (331024343420133).

The spelling of 210022221200121 in words is "two hundred ten trillion, twenty-two billion, two hundred twenty-one million, two hundred thousand, one hundred twenty-one".