144212121221002 has 4 divisors (see below), whose sum is σ = 216318181831506. Its totient is φ = 72106060610500.

The previous prime is 144212121220997. The next prime is 144212121221017. The reversal of 144212121221002 is 200122121212441.

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., 137109837590881 + 7102283630121 = 11709391^2 + 2665011^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36053030305249 + ... + 36053030305252.

Almost surely, 2^{144212121221002} is an apocalyptic number.

144212121221002 is a deficient number, since it is larger than the sum of its proper divisors (72106060610504).

144212121221002 is an equidigital number, since it uses as much as digits as its factorization.

144212121221002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72106060610503.

The product of its (nonzero) digits is 1024, while the sum is 25.

Adding to 144212121221002 its reverse (200122121212441), we get a palindrome (344334242433443).

The spelling of 144212121221002 in words is "one hundred forty-four trillion, two hundred twelve billion, one hundred twenty-one million, two hundred twenty-one thousand, two".