214121320021 has 16 divisors (see below), whose sum is σ = 257619472000. Its totient is φ = 173852759808.

The previous prime is 214121320009. The next prime is 214121320043. The reversal of 214121320021 is 120023121412.

It is not a de Polignac number, because 214121320021 - 2¹⁵ = 214121287253 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214121320921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1114561 + ... + 1292473.

It is an arithmetic number, because the mean of its divisors is an integer number (16101217000).

Almost surely, 2^214121320021 is an apocalyptic number.

It is an amenable number.

214121320021 is a deficient number, since it is larger than the sum of its proper divisors (43498151979).

214121320021 is a wasteful number, since it uses less digits than its factorization.

214121320021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186988.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 214121320021 its reverse (120023121412), we get a palindrome (334144441433).

The spelling of 214121320021 in words is "two hundred fourteen billion, one hundred twenty-one million, three hundred twenty thousand, twenty-one".