102221012212 has 24 divisors (see below), whose sum is σ = 195570732672. Its totient is φ = 46363732800.

The previous prime is 102221012209. The next prime is 102221012213. The reversal of 102221012212 is 212210122201.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102221012213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2488489 + ... + 2529232.

It is an arithmetic number, because the mean of its divisors is an integer number (8148780528).

Almost surely, 2^102221012212 is an apocalyptic number.

It is an amenable number.

102221012212 is a deficient number, since it is larger than the sum of its proper divisors (93349720460).

102221012212 is a wasteful number, since it uses less digits than its factorization.

102221012212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5018199 (or 5018197 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 102221012212 its reverse (212210122201), we get a palindrome (314431134413).

The spelling of 102221012212 in words is "one hundred two billion, two hundred twenty-one million, twelve thousand, two hundred twelve".