1210123121212 has 12 divisors (see below), whose sum is σ = 2118396640360. Its totient is φ = 604866938256.

The previous prime is 1210123121183. The next prime is 1210123121231. The reversal of 1210123121212 is 2121213210121.

It is a self number, because there is not a number n which added to its sum of digits gives 1210123121212.

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, 48641598 + ... + 48666469.

Almost surely, 2^{1210123121212} is an apocalyptic number.

It is an amenable number.

1210123121212 is a deficient number, since it is larger than the sum of its proper divisors (908273519148).

1210123121212 is a wasteful number, since it uses less digits than its factorization.

1210123121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97311180 (or 97311178 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 1210123121212 its reverse (2121213210121), we get a palindrome (3331336331333).

The spelling of 1210123121212 in words is "one trillion, two hundred ten billion, one hundred twenty-three million, one hundred twenty-one thousand, two hundred twelve".