121202222122 has 4 divisors (see below), whose sum is σ = 181803333186. Its totient is φ = 60601111060.

The previous prime is 121202222111. The next prime is 121202222123. The reversal of 121202222122 is 221222202121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 221222202121 = 17 ⋅13013070713.

It can be written as a sum of positive squares in only one way, i.e., 112237730361 + 8964491761 = 335019^2 + 94681^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 121202222122.

It is not an unprimeable number, because it can be changed into a prime (121202222123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30300555529 + ... + 30300555532.

Almost surely, 2^121202222122 is an apocalyptic number.

121202222122 is a deficient number, since it is larger than the sum of its proper divisors (60601111064).

121202222122 is an equidigital number, since it uses as much as digits as its factorization.

121202222122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60601111063.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 121202222122 its reverse (221222202121), we get a palindrome (342424424243).

The spelling of 121202222122 in words is "one hundred twenty-one billion, two hundred two million, two hundred twenty-two thousand, one hundred twenty-two".