13121421212 has 12 divisors (see below), whose sum is σ = 23703212736. Its totient is φ = 6349074720.

The previous prime is 13121421197. The next prime is 13121421227. The reversal of 13121421212 is 21212412131.

It is an interprime number because it is at equal distance from previous prime (13121421197) and next prime (13121421227).

It is a super-3 number, since 3×13121421212³ (a number of 31 digits) contains 333 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52908833 + ... + 52909080.

It is an arithmetic number, because the mean of its divisors is an integer number (1975267728).

Almost surely, 2^13121421212 is an apocalyptic number.

It is an amenable number.

13121421212 is a deficient number, since it is larger than the sum of its proper divisors (10581791524).

13121421212 is a wasteful number, since it uses less digits than its factorization.

13121421212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105817948 (or 105817946 counting only the distinct ones).

The product of its digits is 192, while the sum is 20.

Adding to 13121421212 its reverse (21212412131), we get a palindrome (34333833343).

The spelling of 13121421212 in words is "thirteen billion, one hundred twenty-one million, four hundred twenty-one thousand, two hundred twelve".