121210001212 has 48 divisors (see below), whose sum is σ = 228117335040. Its totient is φ = 56172699072.

The previous prime is 121210001203. The next prime is 121210001221. The reversal of 121210001212 is 212100012121.

It is an interprime number because it is at equal distance from previous prime (121210001203) and next prime (121210001221).

It is a junction number, because it is equal to n+sod(n) for n = 121210001192 and 121210001201.

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, 13758513 + ... + 13767319.

It is an arithmetic number, because the mean of its divisors is an integer number (4752444480).

Almost surely, 2^121210001212 is an apocalyptic number.

It is an amenable number.

121210001212 is a deficient number, since it is larger than the sum of its proper divisors (106907333828).

121210001212 is a wasteful number, since it uses less digits than its factorization.

121210001212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12730 (or 12728 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121210001212 its reverse (212100012121), we get a palindrome (333310013333).

The spelling of 121210001212 in words is "one hundred twenty-one billion, two hundred ten million, one thousand, two hundred twelve".