102212222021 has 16 divisors (see below), whose sum is σ = 125915510784. Its totient is φ = 80796731904.

The previous prime is 102212222009. The next prime is 102212222081. The reversal of 102212222021 is 120222212201.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-102212222021 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102212222081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 417740 + ... + 615573.

It is an arithmetic number, because the mean of its divisors is an integer number (7869719424).

Almost surely, 2^102212222021 is an apocalyptic number.

It is an amenable number.

102212222021 is a deficient number, since it is larger than the sum of its proper divisors (23703288763).

102212222021 is a wasteful number, since it uses less digits than its factorization.

102212222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034420.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 102212222021 its reverse (120222212201), we get a palindrome (222434434222).

The spelling of 102212222021 in words is "one hundred two billion, two hundred twelve million, two hundred twenty-two thousand, twenty-one".