121213320122 has 32 divisors (see below), whose sum is σ = 187246216080. Its totient is φ = 58814379520.

The previous prime is 121213320097. The next prime is 121213320139. The reversal of 121213320122 is 221023312121.

It can be written as a sum of positive squares in 8 ways, for example, as 66161613961 + 55051706161 = 257219^2 + 234631^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121213320094 and 121213320103.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14929208 + ... + 14937324.

Almost surely, 2^121213320122 is an apocalyptic number.

121213320122 is a deficient number, since it is larger than the sum of its proper divisors (66032895958).

121213320122 is a wasteful number, since it uses less digits than its factorization.

121213320122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9106.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 121213320122 its reverse (221023312121), we get a palindrome (342236632243).

The spelling of 121213320122 in words is "one hundred twenty-one billion, two hundred thirteen million, three hundred twenty thousand, one hundred twenty-two".