200122011421 has 2 divisors, whose sum is σ = 200122011422. Its totient is φ = 200122011420.

The previous prime is 200122011367. The next prime is 200122011451. The reversal of 200122011421 is 124110221002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 195956728900 + 4165282521 = 442670^2 + 64539^2 .

It is a cyclic number.

It is not a de Polignac number, because 200122011421 - 2⁷ = 200122011293 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200122011395 and 200122011404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200122011451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100061005710 + 100061005711.

It is an arithmetic number, because the mean of its divisors is an integer number (100061005711).

Almost surely, 2^200122011421 is an apocalyptic number.

It is an amenable number.

200122011421 is a deficient number, since it is larger than the sum of its proper divisors (1).

200122011421 is an equidigital number, since it uses as much as digits as its factorization.

200122011421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 200122011421 its reverse (124110221002), we get a palindrome (324232232423).

The spelling of 200122011421 in words is "two hundred billion, one hundred twenty-two million, eleven thousand, four hundred twenty-one".