20200111121221 has 8 divisors (see below), whose sum is σ = 20251183228160. Its totient is φ = 20149039970928.

The previous prime is 20200111121219. The next prime is 20200111121231. The reversal of 20200111121221 is 12212111100202.

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 20200111121221 - 2¹ = 20200111121219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20200111121195 and 20200111121204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200111121231) 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, 63395620 + ... + 63713458.

It is an arithmetic number, because the mean of its divisors is an integer number (2531397903520).

Almost surely, 2^{20200111121221} is an apocalyptic number.

It is an amenable number.

20200111121221 is a deficient number, since it is larger than the sum of its proper divisors (51072106939).

20200111121221 is a wasteful number, since it uses less digits than its factorization.

20200111121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478323.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20200111121221 its reverse (12212111100202), we get a palindrome (32412222221423).

The spelling of 20200111121221 in words is "twenty trillion, two hundred billion, one hundred eleven million, one hundred twenty-one thousand, two hundred twenty-one".