102111020212 has 6 divisors (see below), whose sum is σ = 178694285378. Its totient is φ = 51055510104.

The previous prime is 102111020201. The next prime is 102111020213. The reversal of 102111020212 is 212020111201.

102111020212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 88282671376 + 13828348836 = 297124^2 + 117594^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102111020192 and 102111020201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102111020213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12763877523 + ... + 12763877530.

Almost surely, 2^102111020212 is an apocalyptic number.

It is an amenable number.

102111020212 is a deficient number, since it is larger than the sum of its proper divisors (76583265166).

102111020212 is a wasteful number, since it uses less digits than its factorization.

102111020212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25527755057 (or 25527755055 counting only the distinct ones).

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

Adding to 102111020212 its reverse (212020111201), we get a palindrome (314131131413).

The spelling of 102111020212 in words is "one hundred two billion, one hundred eleven million, twenty thousand, two hundred twelve".