210220102112121 has 24 divisors (see below), whose sum is σ = 316381862160000. Its totient is φ = 134340606040032.

The previous prime is 210220102112113. The next prime is 210220102112131. The reversal of 210220102112121 is 121211201022012.

210220102112121 is a `hidden beast` number, since 2 + 10 + 220 + 10 + 211 + 212 + 1 = 666.

It is not a de Polignac number, because 210220102112121 - 2³ = 210220102112113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210220102112094 and 210220102112103.

It is not an unprimeable number, because it can be changed into a prime (210220102112101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2897233521 + ... + 2897306078.

It is an arithmetic number, because the mean of its divisors is an integer number (13182577590000).

Almost surely, 2^{210220102112121} is an apocalyptic number.

It is an amenable number.

210220102112121 is a deficient number, since it is larger than the sum of its proper divisors (106161760047879).

210220102112121 is a wasteful number, since it uses less digits than its factorization.

210220102112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5794539773 (or 5794539770 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 210220102112121 its reverse (121211201022012), we get a palindrome (331431303134133).

The spelling of 210220102112121 in words is "two hundred ten trillion, two hundred twenty billion, one hundred two million, one hundred twelve thousand, one hundred twenty-one".