20212111321 has 8 divisors (see below), whose sum is σ = 20901590784. Its totient is φ = 19524974160.

The previous prime is 20212111319. The next prime is 20212111331. The reversal of 20212111321 is 12311121202.

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 20212111321 - 2¹ = 20212111319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20212111295 and 20212111304.

It is not an unprimeable number, because it can be changed into a prime (20212111331) 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, 568015 + ... + 602548.

It is an arithmetic number, because the mean of its divisors is an integer number (2612698848).

Almost surely, 2^20212111321 is an apocalyptic number.

It is an amenable number.

20212111321 is a deficient number, since it is larger than the sum of its proper divisors (689479463).

20212111321 is a wasteful number, since it uses less digits than its factorization.

20212111321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1171151.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 20212111321 its reverse (12311121202), we get a palindrome (32523232523).

The spelling of 20212111321 in words is "twenty billion, two hundred twelve million, one hundred eleven thousand, three hundred twenty-one".