144215816802121 has 7 divisors (see below), whose sum is σ = 144848342314411. Its totient is φ = 143586053409972.

The previous prime is 144215816802073. The next prime is 144215816802149. The reversal of 144215816802121 is 121208618512441.

The square root of 144215816802121 is 12008989.

The cubic root of 144215816802121 is 52441.

It is a perfect power (a square, a cube, a 6-th power), and thus also a powerful number.

It can be written as a sum of positive squares in 3 ways, for example, as 70678674657721 + 73537142144400 = 8407061^2 + 8575380^2 .

It is not a de Polignac number, because 144215816802121 - 2⁷ = 144215816801993 is a prime.

It is a super-3 number, since 3×144215816802121³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144215816806121) by changing a digit.

It is a polite number, since it can be written in 6 ways as a sum of consecutive naturals, for example, 629763392035 + ... + 629763392263.

Almost surely, 2^{144215816802121} is an apocalyptic number.

144215816802121 is the 12008989-th square number.

144215816802121 is the 6004495-th centered octagonal number.

It is an amenable number.

144215816802121 is a deficient number, since it is larger than the sum of its proper divisors (632525512290).

144215816802121 is an frugal number, since it uses more digits than its factorization.

144215816802121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374 (or 229 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 46.

The spelling of 144215816802121 in words is "one hundred forty-four trillion, two hundred fifteen billion, eight hundred sixteen million, eight hundred two thousand, one hundred twenty-one".