290200210021 has 2 divisors, whose sum is σ = 290200210022. Its totient is φ = 290200210020.

The previous prime is 290200210019. The next prime is 290200210031. The reversal of 290200210021 is 120012002092.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 164097097921 + 126103112100 = 405089^2 + 355110^2 .

It is a cyclic number.

It is not a de Polignac number, because 290200210021 - 2¹ = 290200210019 is a prime.

Together with 290200210019, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (290200210031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145100105010 + 145100105011.

It is an arithmetic number, because the mean of its divisors is an integer number (145100105011).

Almost surely, 2^290200210021 is an apocalyptic number.

It is an amenable number.

290200210021 is a deficient number, since it is larger than the sum of its proper divisors (1).

290200210021 is an equidigital number, since it uses as much as digits as its factorization.

290200210021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

The spelling of 290200210021 in words is "two hundred ninety billion, two hundred million, two hundred ten thousand, twenty-one".