102222222221122 has 4 divisors (see below), whose sum is σ = 153333333331686. Its totient is φ = 51111111110560.

The previous prime is 102222222221113. The next prime is 102222222221123. The reversal of 102222222221122 is 221122222222201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 93555728001241 + 8666494219881 = 9672421^2 + 2943891^2 .

It is not an unprimeable number, because it can be changed into a prime (102222222221123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25555555555279 + ... + 25555555555282.

Almost surely, 2^{102222222221122} is an apocalyptic number.

102222222221122 is a deficient number, since it is larger than the sum of its proper divisors (51111111110564).

102222222221122 is an equidigital number, since it uses as much as digits as its factorization.

102222222221122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51111111110563.

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 102222222221122 its reverse (221122222222201), we get a palindrome (323344444443323).

The spelling of 102222222221122 in words is "one hundred two trillion, two hundred twenty-two billion, two hundred twenty-two million, two hundred twenty-one thousand, one hundred twenty-two".