121211120001212 has 24 divisors (see below), whose sum is σ = 212186980456080. Its totient is φ = 60586271533440.

The previous prime is 121211120001203. The next prime is 121211120001229. The reversal of 121211120001212 is 212100021112121.

It is a super-2 number, since 2×121211120001212² (a number of 29 digits) contains 22 as substring.

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, 159078662 + ... + 159838802.

It is an arithmetic number, because the mean of its divisors is an integer number (8841124185670).

Almost surely, 2^{121211120001212} is an apocalyptic number.

It is an amenable number.

121211120001212 is a deficient number, since it is larger than the sum of its proper divisors (90975860454868).

121211120001212 is a wasteful number, since it uses less digits than its factorization.

121211120001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772781 (or 772779 counting only the distinct ones).

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

Adding to 121211120001212 its reverse (212100021112121), we get a palindrome (333311141113333).

The spelling of 121211120001212 in words is "one hundred twenty-one trillion, two hundred eleven billion, one hundred twenty million, one thousand, two hundred twelve".