1026800121 has 8 divisors (see below), whose sum is σ = 1372587840. Its totient is φ = 682772912.

The previous prime is 1026800107. The next prime is 1026800123. The reversal of 1026800121 is 1210086201.

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

It is a cyclic number.

It is not a de Polignac number, because 1026800121 - 2⁶ = 1026800057 is a prime.

It is a super-2 number, since 2×1026800121² = 2108636976971229282, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1026800123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 438765 + ... + 441098.

It is an arithmetic number, because the mean of its divisors is an integer number (171573480).

Almost surely, 2^1026800121 is an apocalyptic number.

It is an amenable number.

1026800121 is a deficient number, since it is larger than the sum of its proper divisors (345787719).

1026800121 is an equidigital number, since it uses as much as digits as its factorization.

1026800121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880255.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 1026800121 is about 32043.7220216379. The cubic root of 1026800121 is about 1008.8547358964.

Adding to 1026800121 its reverse (1210086201), we get a palindrome (2236886322).

The spelling of 1026800121 in words is "one billion, twenty-six million, eight hundred thousand, one hundred twenty-one".