1212101121212 has 6 divisors (see below), whose sum is σ = 2121176962128. Its totient is φ = 606050560604.

The previous prime is 1212101121211. The next prime is 1212101121229. The reversal of 1212101121212 is 2121211012121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212101121211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151512640148 + ... + 151512640155.

It is an arithmetic number, because the mean of its divisors is an integer number (353529493688).

Almost surely, 2^{1212101121212} is an apocalyptic number.

It is an amenable number.

1212101121212 is a deficient number, since it is larger than the sum of its proper divisors (909075840916).

1212101121212 is a wasteful number, since it uses less digits than its factorization.

1212101121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303025280307 (or 303025280305 counting only the distinct ones).

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

Adding to 1212101121212 its reverse (2121211012121), we get a palindrome (3333312133333).

The spelling of 1212101121212 in words is "one trillion, two hundred twelve billion, one hundred one million, one hundred twenty-one thousand, two hundred twelve".