220010121973 has 2 divisors, whose sum is σ = 220010121974. Its totient is φ = 220010121972.

The previous prime is 220010121953. The next prime is 220010122037. The reversal of 220010121973 is 379121010022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211579760484 + 8430361489 = 459978^2 + 91817^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220010121973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220010121913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110005060986 + 110005060987.

It is an arithmetic number, because the mean of its divisors is an integer number (110005060987).

Almost surely, 2^220010121973 is an apocalyptic number.

It is an amenable number.

220010121973 is a deficient number, since it is larger than the sum of its proper divisors (1).

220010121973 is an equidigital number, since it uses as much as digits as its factorization.

220010121973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 28.

Adding to 220010121973 its reverse (379121010022), we get a palindrome (599131131995).

The spelling of 220010121973 in words is "two hundred twenty billion, ten million, one hundred twenty-one thousand, nine hundred seventy-three".