121212120322 has 4 divisors (see below), whose sum is σ = 181818180486. Its totient is φ = 60606060160.

The previous prime is 121212120277. The next prime is 121212120397. The reversal of 121212120322 is 223021212121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 223021212121 = 2969 ⋅75116609.

It can be written as a sum of positive squares in only one way, i.e., 77869460601 + 43342659721 = 279051^2 + 208189^2 .

It is a super-2 number, since 2×121212120322² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121212120322.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30303030079 + ... + 30303030082.

Almost surely, 2^121212120322 is an apocalyptic number.

121212120322 is a deficient number, since it is larger than the sum of its proper divisors (60606060164).

121212120322 is an equidigital number, since it uses as much as digits as its factorization.

121212120322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60606060163.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 121212120322 its reverse (223021212121), we get a palindrome (344233332443).

The spelling of 121212120322 in words is "one hundred twenty-one billion, two hundred twelve million, one hundred twenty thousand, three hundred twenty-two".