1000222022121 has 24 divisors (see below), whose sum is σ = 1552149133920. Its totient is φ = 571266464832.

The previous prime is 1000222022119. The next prime is 1000222022141. The reversal of 1000222022121 is 1212202220001.

1000222022121 = 142849² + 142850² + ... + 142897².

It is not a de Polignac number, because 1000222022121 - 2¹ = 1000222022119 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1000222022121.

It is not an unprimeable number, because it can be changed into a prime (1000222022101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1428196 + ... + 2010021.

It is an arithmetic number, because the mean of its divisors is an integer number (64672880580).

Almost surely, 2^{1000222022121} is an apocalyptic number.

It is an amenable number.

1000222022121 is a deficient number, since it is larger than the sum of its proper divisors (551927111799).

1000222022121 is a wasteful number, since it uses less digits than its factorization.

1000222022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3440213 (or 3440206 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1000222022121 its reverse (1212202220001), we get a palindrome (2212424242122).

The spelling of 1000222022121 in words is "one trillion, two hundred twenty-two million, twenty-two thousand, one hundred twenty-one".