121022221221212 has 12 divisors (see below), whose sum is σ = 215260836107016. Its totient is φ = 59519125190640.

The previous prime is 121022221221173. The next prime is 121022221221221. The reversal of 121022221221212 is 212122122220121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247996354718 + ... + 247996355205.

It is an arithmetic number, because the mean of its divisors is an integer number (17938403008918).

Almost surely, 2^{121022221221212} is an apocalyptic number.

It is an amenable number.

121022221221212 is a deficient number, since it is larger than the sum of its proper divisors (94238614885804).

121022221221212 is a wasteful number, since it uses less digits than its factorization.

121022221221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495992709988 (or 495992709986 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 121022221221212 its reverse (212122122220121), we get a palindrome (333144343441333).

The spelling of 121022221221212 in words is "one hundred twenty-one trillion, twenty-two billion, two hundred twenty-one million, two hundred twenty-one thousand, two hundred twelve".