1001322222121 has 16 divisors (see below), whose sum is σ = 1080427904640. Its totient is φ = 922514382720.

The previous prime is 1001322222091. The next prime is 1001322222127. The reversal of 1001322222121 is 1212222231001.

It is a cyclic number.

It is not a de Polignac number, because 1001322222121 - 2¹³ = 1001322213929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001322222127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84401236 + ... + 84413098.

It is an arithmetic number, because the mean of its divisors is an integer number (67526744040).

Almost surely, 2^{1001322222121} is an apocalyptic number.

It is an amenable number.

1001322222121 is a deficient number, since it is larger than the sum of its proper divisors (79105682519).

1001322222121 is a wasteful number, since it uses less digits than its factorization.

1001322222121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23856.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 1001322222121 its reverse (1212222231001), we get a palindrome (2213544453122).

The spelling of 1001322222121 in words is "one trillion, one billion, three hundred twenty-two million, two hundred twenty-two thousand, one hundred twenty-one".