210021220147 has 2 divisors, whose sum is σ = 210021220148. Its totient is φ = 210021220146.

The previous prime is 210021220069. The next prime is 210021220183. The reversal of 210021220147 is 741022120012.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210021220147 is a prime.

It is not a weakly prime, because it can be changed into another prime (210021820147) 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, 105010610073 + 105010610074.

It is an arithmetic number, because the mean of its divisors is an integer number (105010610074).

Almost surely, 2^210021220147 is an apocalyptic number.

210021220147 is a deficient number, since it is larger than the sum of its proper divisors (1).

210021220147 is an equidigital number, since it uses as much as digits as its factorization.

210021220147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 22.

Adding to 210021220147 its reverse (741022120012), we get a palindrome (951043340159).

The spelling of 210021220147 in words is "two hundred ten billion, twenty-one million, two hundred twenty thousand, one hundred forty-seven".