121212110022 has 16 divisors (see below), whose sum is σ = 255183389760. Its totient is φ = 38277508392.

The previous prime is 121212110009. The next prime is 121212110039. The reversal of 121212110022 is 220011212121.

It is a junction number, because it is equal to n+sod(n) for n = 121212109983 and 121212110010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 531631948 + ... + 531632175.

It is an arithmetic number, because the mean of its divisors is an integer number (15948961860).

Almost surely, 2^121212110022 is an apocalyptic number.

121212110022 is an abundant number, since it is smaller than the sum of its proper divisors (133971279738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121212110022 is a wasteful number, since it uses less digits than its factorization.

121212110022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063264147.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121212110022 its reverse (220011212121), we get a palindrome (341223322143).

The spelling of 121212110022 in words is "one hundred twenty-one billion, two hundred twelve million, one hundred ten thousand, twenty-two".