200121220212029 has 2 divisors, whose sum is σ = 200121220212030. Its totient is φ = 200121220212028.

The previous prime is 200121220212013. The next prime is 200121220212059. The reversal of 200121220212029 is 920212022121002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126438825228004 + 73682394984025 = 11244502^2 + 8583845^2 .

It is a cyclic number.

It is not a de Polignac number, because 200121220212029 - 2⁴ = 200121220212013 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 200121220211989 and 200121220212007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200121220212059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100060610106014 + 100060610106015.

It is an arithmetic number, because the mean of its divisors is an integer number (100060610106015).

Almost surely, 2^{200121220212029} is an apocalyptic number.

It is an amenable number.

200121220212029 is a deficient number, since it is larger than the sum of its proper divisors (1).

200121220212029 is an equidigital number, since it uses as much as digits as its factorization.

200121220212029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 26.

The spelling of 200121220212029 in words is "two hundred trillion, one hundred twenty-one billion, two hundred twenty million, two hundred twelve thousand, twenty-nine".