121222211212 has 6 divisors (see below), whose sum is σ = 212138869628. Its totient is φ = 60611105604.

The previous prime is 121222211167. The next prime is 121222211281. The reversal of 121222211212 is 212112222121.

121222211212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×121222211212² (a number of 23 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 121222211212.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15152776398 + ... + 15152776405.

Almost surely, 2^121222211212 is an apocalyptic number.

It is an amenable number.

121222211212 is a deficient number, since it is larger than the sum of its proper divisors (90916658416).

121222211212 is a wasteful number, since it uses less digits than its factorization.

121222211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30305552807 (or 30305552805 counting only the distinct ones).

The product of its digits is 128, while the sum is 19.

Adding to 121222211212 its reverse (212112222121), we get a palindrome (333334433333).

The spelling of 121222211212 in words is "one hundred twenty-one billion, two hundred twenty-two million, two hundred eleven thousand, two hundred twelve".