1200026200021 has 36 divisors (see below), whose sum is σ = 1373329399680. Its totient is φ = 1047490474800.

The previous prime is 1200026200013. The next prime is 1200026200039.

1200026200021 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1200026200021 - 2³ = 1200026200013 is a prime.

It is a super-2 number, since 2×1200026200021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200026199968 and 1200026200004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200026200001) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 13154556 + ... + 13245466.

It is an arithmetic number, because the mean of its divisors is an integer number (38148038880).

Almost surely, 2^{1200026200021} is an apocalyptic number.

1200026200021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1200026200021 is a deficient number, since it is larger than the sum of its proper divisors (173303199659).

1200026200021 is an equidigital number, since it uses as much as digits as its factorization.

1200026200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91078 (or 91024 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The spelling of 1200026200021 in words is "one trillion, two hundred billion, twenty-six million, two hundred thousand, twenty-one".