210100220022121 has 32 divisors (see below), whose sum is σ = 251608738123008. Its totient is φ = 172898415056640.

The previous prime is 210100220022109. The next prime is 210100220022163. The reversal of 210100220022121 is 121220022001012.

It is a happy number.

It is not a de Polignac number, because 210100220022121 - 2¹⁵ = 210100219989353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210100220022095 and 210100220022104.

It is not an unprimeable number, because it can be changed into a prime (210100220022421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9175935 + ... + 22458811.

It is an arithmetic number, because the mean of its divisors is an integer number (7862773066344).

Almost surely, 2^{210100220022121} is an apocalyptic number.

It is an amenable number.

210100220022121 is a deficient number, since it is larger than the sum of its proper divisors (41508518100887).

210100220022121 is a wasteful number, since it uses less digits than its factorization.

210100220022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13285041.

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

Adding to 210100220022121 its reverse (121220022001012), we get a palindrome (331320242023133).

The spelling of 210100220022121 in words is "two hundred ten trillion, one hundred billion, two hundred twenty million, twenty-two thousand, one hundred twenty-one".