101200400443 has 4 divisors (see below), whose sum is σ = 101201675400. Its totient is φ = 101199125488.

The previous prime is 101200400429. The next prime is 101200400447. The reversal of 101200400443 is 344004002101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 344004002101 = 29 ⋅11862206969.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101200400443 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101200400443.

It is not an unprimeable number, because it can be changed into a prime (101200400447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 509905 + ... + 680002.

It is an arithmetic number, because the mean of its divisors is an integer number (25300418850).

Almost surely, 2^101200400443 is an apocalyptic number.

101200400443 is a deficient number, since it is larger than the sum of its proper divisors (1274957).

101200400443 is an equidigital number, since it uses as much as digits as its factorization.

101200400443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1274956.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 101200400443 its reverse (344004002101), we get a palindrome (445204402544).

The spelling of 101200400443 in words is "one hundred one billion, two hundred million, four hundred thousand, four hundred forty-three".