3123200020221 has 20 divisors (see below), whose sum is σ = 4868369760672. Its totient is φ = 1991605808808.

The previous prime is 3123200020201. The next prime is 3123200020243. The reversal of 3123200020221 is 1220200023213.

It is not a de Polignac number, because 3123200020221 - 2¹⁷ = 3123199889149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3123200020194 and 3123200020203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3123200020201) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 838216071 + ... + 838219796.

Almost surely, 2^{3123200020221} is an apocalyptic number.

It is an amenable number.

3123200020221 is a deficient number, since it is larger than the sum of its proper divisors (1745169740451).

3123200020221 is a wasteful number, since it uses less digits than its factorization.

3123200020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1676435902 (or 1676435893 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 3123200020221 its reverse (1220200023213), we get a palindrome (4343400043434).

The spelling of 3123200020221 in words is "three trillion, one hundred twenty-three billion, two hundred million, twenty thousand, two hundred twenty-one".