102210012122 has 4 divisors (see below), whose sum is σ = 153315018186. Its totient is φ = 51105006060.

The previous prime is 102210012089. The next prime is 102210012127. The reversal of 102210012122 is 221210012201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 221210012201 = 62653 ⋅3530717.

It can be written as a sum of positive squares in only one way, i.e., 73030198081 + 29179814041 = 270241^2 + 170821^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102210012097 and 102210012106.

It is not an unprimeable number, because it can be changed into a prime (102210012127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25552503029 + ... + 25552503032.

Almost surely, 2^102210012122 is an apocalyptic number.

102210012122 is a deficient number, since it is larger than the sum of its proper divisors (51105006064).

102210012122 is an equidigital number, since it uses as much as digits as its factorization.

102210012122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51105006063.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 102210012122 its reverse (221210012201), we get a palindrome (323420024323).

The spelling of 102210012122 in words is "one hundred two billion, two hundred ten million, twelve thousand, one hundred twenty-two".