1222638368101 has 8 divisors (see below), whose sum is σ = 1227423299544. Its totient is φ = 1217856514560.

The previous prime is 1222638368059. The next prime is 1222638368117. The reversal of 1222638368101 is 1018638362221.

It can be written as a sum of positive squares in 4 ways, for example, as 476831680900 + 745806687201 = 690530^2 + 863601^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222638368101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222638369101) 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 in 7 ways as a sum of consecutive naturals, for example, 28155 + ... + 1563991.

It is an arithmetic number, because the mean of its divisors is an integer number (153427912443).

Almost surely, 2^{1222638368101} is an apocalyptic number.

It is an amenable number.

1222638368101 is a deficient number, since it is larger than the sum of its proper divisors (4784931443).

1222638368101 is a wasteful number, since it uses less digits than its factorization.

1222638368101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1538951.

The product of its (nonzero) digits is 165888, while the sum is 43.

The spelling of 1222638368101 in words is "one trillion, two hundred twenty-two billion, six hundred thirty-eight million, three hundred sixty-eight thousand, one hundred one".