210144140120021 has 8 divisors (see below), whose sum is σ = 215722631851584. Its totient is φ = 204597076511520.

The previous prime is 210144140119999. The next prime is 210144140120029. The reversal of 210144140120021 is 120021041441012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 210144140120021 - 2¹⁴ = 210144140103637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210144140120029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7857017216 + ... + 7857043961.

It is an arithmetic number, because the mean of its divisors is an integer number (26965328981448).

Almost surely, 2^{210144140120021} is an apocalyptic number.

It is an amenable number.

210144140120021 is a deficient number, since it is larger than the sum of its proper divisors (5578491731563).

210144140120021 is a wasteful number, since it uses less digits than its factorization.

210144140120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15714061531.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 210144140120021 its reverse (120021041441012), we get a palindrome (330165181561033).

The spelling of 210144140120021 in words is "two hundred ten trillion, one hundred forty-four billion, one hundred forty million, one hundred twenty thousand, twenty-one".