2220001654261 has 2 divisors, whose sum is σ = 2220001654262. Its totient is φ = 2220001654260.

The previous prime is 2220001654237. The next prime is 2220001654363. The reversal of 2220001654261 is 1624561000222.

2220001654261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1736844595236 + 483157059025 = 1317894^2 + 695095^2 .

It is a cyclic number.

It is not a de Polignac number, because 2220001654261 - 2⁵ = 2220001654229 is a prime.

It is a super-2 number, since 2×2220001654261² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2220001624261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110000827130 + 1110000827131.

It is an arithmetic number, because the mean of its divisors is an integer number (1110000827131).

Almost surely, 2^{2220001654261} is an apocalyptic number.

It is an amenable number.

2220001654261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220001654261 is an equidigital number, since it uses as much as digits as its factorization.

2220001654261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 2220001654261 its reverse (1624561000222), we get a palindrome (3844562654483).

The spelling of 2220001654261 in words is "two trillion, two hundred twenty billion, one million, six hundred fifty-four thousand, two hundred sixty-one".