1000122220101 has 32 divisors (see below), whose sum is σ = 1442956769280. Its totient is φ = 614497713984.

The previous prime is 1000122220081. The next prime is 1000122220177. The reversal of 1000122220101 is 1010222210001.

It is not a de Polignac number, because 1000122220101 - 2¹⁸ = 1000121957957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000122220901) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1638711 + ... + 2164628.

It is an arithmetic number, because the mean of its divisors is an integer number (45092399040).

Almost surely, 2^{1000122220101} is an apocalyptic number.

It is an amenable number.

1000122220101 is a deficient number, since it is larger than the sum of its proper divisors (442834549179).

1000122220101 is a wasteful number, since it uses less digits than its factorization.

1000122220101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3803505.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1000122220101 its reverse (1010222210001), we get a palindrome (2010344430102).

The spelling of 1000122220101 in words is "one trillion, one hundred twenty-two million, two hundred twenty thousand, one hundred one".