121212210221012 has 48 divisors (see below), whose sum is σ = 219033726912000. Its totient is φ = 58632394423680.

The previous prime is 121212210221009. The next prime is 121212210221077. The reversal of 121212210221012 is 210122012212121.

It is a congruent number.

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, 7848998963 + ... + 7849014405.

It is an arithmetic number, because the mean of its divisors is an integer number (4563202644000).

Almost surely, 2^{121212210221012} is an apocalyptic number.

It is an amenable number.

121212210221012 is a deficient number, since it is larger than the sum of its proper divisors (97821516690988).

121212210221012 is a wasteful number, since it uses less digits than its factorization.

121212210221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31536 (or 31534 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 121212210221012 its reverse (210122012212121), we get a palindrome (331334222433133).

The spelling of 121212210221012 in words is "one hundred twenty-one trillion, two hundred twelve billion, two hundred ten million, two hundred twenty-one thousand, twelve".