200121002087 has 2 divisors, whose sum is σ = 200121002088. Its totient is φ = 200121002086.

The previous prime is 200121002077. The next prime is 200121002129. The reversal of 200121002087 is 780200121002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 200121002087 - 2¹⁴ = 200120985703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200121002077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100060501043 + 100060501044.

It is an arithmetic number, because the mean of its divisors is an integer number (100060501044).

Almost surely, 2^200121002087 is an apocalyptic number.

200121002087 is a deficient number, since it is larger than the sum of its proper divisors (1).

200121002087 is an equidigital number, since it uses as much as digits as its factorization.

200121002087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 23.

Adding to 200121002087 its reverse (780200121002), we get a palindrome (980321123089).

The spelling of 200121002087 in words is "two hundred billion, one hundred twenty-one million, two thousand, eighty-seven".