102212222138 has 16 divisors (see below), whose sum is σ = 165118667616. Its totient is φ = 47172981360.

The previous prime is 102212222137. The next prime is 102212222149. The reversal of 102212222138 is 831222212201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (102212222137) 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, 745145 + ... + 871587.

It is an arithmetic number, because the mean of its divisors is an integer number (10319916726).

Almost surely, 2^102212222138 is an apocalyptic number.

102212222138 is a deficient number, since it is larger than the sum of its proper divisors (62906445478).

102212222138 is a wasteful number, since it uses less digits than its factorization.

102212222138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157549.

The product of its (nonzero) digits is 1536, while the sum is 26.

Adding to 102212222138 its reverse (831222212201), we get a palindrome (933434434339).

The spelling of 102212222138 in words is "one hundred two billion, two hundred twelve million, two hundred twenty-two thousand, one hundred thirty-eight".