102020211211 has 4 divisors (see below), whose sum is σ = 106455872592. Its totient is φ = 97584549832.

The previous prime is 102020211203. The next prime is 102020211233. The reversal of 102020211211 is 112112020201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112112020201 = 31223 ⋅3590687.

It is a cyclic number.

It is not a de Polignac number, because 102020211211 - 2³ = 102020211203 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102020211191 and 102020211200.

It is not an unprimeable number, because it can be changed into a prime (102020214211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2217830656 + ... + 2217830701.

It is an arithmetic number, because the mean of its divisors is an integer number (26613968148).

Almost surely, 2^102020211211 is an apocalyptic number.

102020211211 is a deficient number, since it is larger than the sum of its proper divisors (4435661381).

102020211211 is an equidigital number, since it uses as much as digits as its factorization.

102020211211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4435661380.

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

Adding to 102020211211 its reverse (112112020201), we get a palindrome (214132231412).

The spelling of 102020211211 in words is "one hundred two billion, twenty million, two hundred eleven thousand, two hundred eleven".