13121400002 has 4 divisors (see below), whose sum is σ = 19682100006. Its totient is φ = 6560700000.

The previous prime is 13121399989. The next prime is 13121400013. The reversal of 13121400002 is 20000412131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7121503321 + 5999896681 = 84389^2 + 77459^2 .

It is a super-2 number, since 2×13121400002² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13121400002.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3280349999 + ... + 3280350002.

Almost surely, 2^13121400002 is an apocalyptic number.

13121400002 is a deficient number, since it is larger than the sum of its proper divisors (6560700004).

13121400002 is an equidigital number, since it uses as much as digits as its factorization.

13121400002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6560700003.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 13121400002 its reverse (20000412131), we get a palindrome (33121812133).

The spelling of 13121400002 in words is "thirteen billion, one hundred twenty-one million, four hundred thousand, two".