102212110220212 has 6 divisors (see below), whose sum is σ = 178871192885378. Its totient is φ = 51106055110104.

The previous prime is 102212110220183. The next prime is 102212110220219. The reversal of 102212110220212 is 212022011212201.

It can be written as a sum of positive squares in only one way, i.e., 85664576426256 + 16547533793956 = 9255516^2 + 4067866^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 102212110220212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102212110220219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12776513777523 + ... + 12776513777530.

Almost surely, 2^{102212110220212} is an apocalyptic number.

It is an amenable number.

102212110220212 is a deficient number, since it is larger than the sum of its proper divisors (76659082665166).

102212110220212 is a wasteful number, since it uses less digits than its factorization.

102212110220212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25553027555057 (or 25553027555055 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 102212110220212 its reverse (212022011212201), we get a palindrome (314234121432413).

The spelling of 102212110220212 in words is "one hundred two trillion, two hundred twelve billion, one hundred ten million, two hundred twenty thousand, two hundred twelve".