121121102100122 has 4 divisors (see below), whose sum is σ = 181681653150186. Its totient is φ = 60560551050060.

The previous prime is 121121102100113. The next prime is 121121102100181. The reversal of 121121102100122 is 221001201121121.

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., 119989918828081 + 1131183272041 = 10953991^2 + 1063571^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 121121102100122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30280275525029 + ... + 30280275525032.

Almost surely, 2^{121121102100122} is an apocalyptic number.

121121102100122 is a deficient number, since it is larger than the sum of its proper divisors (60560551050064).

121121102100122 is an equidigital number, since it uses as much as digits as its factorization.

121121102100122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60560551050063.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 121121102100122 its reverse (221001201121121), we get a palindrome (342122303221243).

The spelling of 121121102100122 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, one hundred two million, one hundred thousand, one hundred twenty-two".