102221021012212 has 12 divisors (see below), whose sum is σ = 178887127977796. Its totient is φ = 51110413018560.

The previous prime is 102221021012189. The next prime is 102221021012239. The reversal of 102221021012212 is 212210120122201.

It can be written as a sum of positive squares in 2 ways, for example, as 59159418378256 + 43061602633956 = 7691516^2 + 6562134^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 102221021012212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21986703 + ... + 26227030.

Almost surely, 2^{102221021012212} is an apocalyptic number.

It is an amenable number.

102221021012212 is a deficient number, since it is larger than the sum of its proper divisors (76666106965584).

102221021012212 is a wasteful number, since it uses less digits than its factorization.

102221021012212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48743778 (or 48743776 counting only the distinct ones).

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

Adding to 102221021012212 its reverse (212210120122201), we get a palindrome (314431141134413).

The spelling of 102221021012212 in words is "one hundred two trillion, two hundred twenty-one billion, twenty-one million, twelve thousand, two hundred twelve".