2122207481 has 2 divisors, whose sum is σ = 2122207482. Its totient is φ = 2122207480.

The previous prime is 2122207469. The next prime is 2122207499. The reversal of 2122207481 is 1847022212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1608731881 + 513475600 = 40109^2 + 22660^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2122207481 is a prime.

It is a super-2 number, since 2×2122207481² = 9007529184824730722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2122207411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061103740 + 1061103741.

It is an arithmetic number, because the mean of its divisors is an integer number (1061103741).

Almost surely, 2^2122207481 is an apocalyptic number.

It is an amenable number.

2122207481 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122207481 is an equidigital number, since it uses as much as digits as its factorization.

2122207481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 2122207481 is about 46067.4232077289. The cubic root of 2122207481 is about 1285.0773835415.

Adding to 2122207481 its reverse (1847022212), we get a palindrome (3969229693).

The spelling of 2122207481 in words is "two billion, one hundred twenty-two million, two hundred seven thousand, four hundred eighty-one".