1000200021123 has 16 divisors (see below), whose sum is σ = 1337428477440. Its totient is φ = 664887588096.

The previous prime is 1000200021113. The next prime is 1000200021179. The reversal of 1000200021123 is 3211200020001.

It is not a de Polignac number, because 1000200021123 - 2⁵ = 1000200021091 is a prime.

It is a super-2 number, since 2×1000200021123² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1000200021099 and 1000200021108.

It is not an unprimeable number, because it can be changed into a prime (1000200021113) 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, 2011186 + ... + 2458712.

It is an arithmetic number, because the mean of its divisors is an integer number (83589279840).

Almost surely, 2^{1000200021123} is an apocalyptic number.

1000200021123 is a deficient number, since it is larger than the sum of its proper divisors (337228456317).

1000200021123 is a wasteful number, since it uses less digits than its factorization.

1000200021123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449666.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 1000200021123 its reverse (3211200020001), we get a palindrome (4211400041124).

The spelling of 1000200021123 in words is "one trillion, two hundred million, twenty-one thousand, one hundred twenty-three".