210121220102211 has 128 divisors (see below), whose sum is σ = 356007830492160. Its totient is φ = 121335459840000.

The previous prime is 210121220102179. The next prime is 210121220102219. The reversal of 210121220102211 is 112201022121012.

210121220102211 is a `hidden beast` number, since 2 + 10 + 121 + 220 + 102 + 211 = 666.

210121220102211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 210121220102211 - 2⁵ = 210121220102179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (210121220102219) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 5090001891 + ... + 5090043171.

It is an arithmetic number, because the mean of its divisors is an integer number (2781311175720).

Almost surely, 2^{210121220102211} is an apocalyptic number.

210121220102211 is a deficient number, since it is larger than the sum of its proper divisors (145886610389949).

210121220102211 is a wasteful number, since it uses less digits than its factorization.

210121220102211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51106 (or 51100 counting only the distinct ones).

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

Adding to 210121220102211 its reverse (112201022121012), we get a palindrome (322322242223223).

The spelling of 210121220102211 in words is "two hundred ten trillion, one hundred twenty-one billion, two hundred twenty million, one hundred two thousand, two hundred eleven".