102121020211 has 16 divisors (see below), whose sum is σ = 122223780864. Its totient is φ = 83424252384.

The previous prime is 102121020179. The next prime is 102121020217. The reversal of 102121020211 is 112020121201.

It is not a de Polignac number, because 102121020211 - 2⁵ = 102121020179 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102121020191 and 102121020200.

It is not an unprimeable number, because it can be changed into a prime (102121020217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1100335 + ... + 1189528.

It is an arithmetic number, because the mean of its divisors is an integer number (7638986304).

Almost surely, 2^102121020211 is an apocalyptic number.

102121020211 is a deficient number, since it is larger than the sum of its proper divisors (20102760653).

102121020211 is a wasteful number, since it uses less digits than its factorization.

102121020211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2290170.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 102121020211 its reverse (112020121201), we get a palindrome (214141141412).

The spelling of 102121020211 in words is "one hundred two billion, one hundred twenty-one million, twenty thousand, two hundred eleven".