999022210001 has 4 divisors (see below), whose sum is σ = 1057788222372. Its totient is φ = 940256197632.

The previous prime is 999022209989. The next prime is 999022210013. The reversal of 999022210001 is 100012220999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100012220999 = 79 ⋅1265977481.

It is an interprime number because it is at equal distance from previous prime (999022209989) and next prime (999022210013).

It can be written as a sum of positive squares in 2 ways, for example, as 901255929025 + 97766280976 = 949345^2 + 312676^2 .

It is a de Polignac number, because none of the positive numbers 2^k-999022210001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (999022210051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29383006160 + ... + 29383006193.

It is an arithmetic number, because the mean of its divisors is an integer number (264447055593).

Almost surely, 2^999022210001 is an apocalyptic number.

It is an amenable number.

999022210001 is a deficient number, since it is larger than the sum of its proper divisors (58766012371).

999022210001 is a wasteful number, since it uses less digits than its factorization.

999022210001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58766012370.

The product of its (nonzero) digits is 5832, while the sum is 35.

The spelling of 999022210001 in words is "nine hundred ninety-nine billion, twenty-two million, two hundred ten thousand, one".