1100402350421 has 6 divisors (see below), whose sum is σ = 1209533162166. Its totient is φ = 1000365773000.

The previous prime is 1100402350393. The next prime is 1100402350423. The reversal of 1100402350421 is 1240532040011.

It can be written as a sum of positive squares in only one way, i.e., 672463961521 + 427938388900 = 820039^2 + 654170^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1100402350421 is a prime.

It is a super-2 number, since 2×1100402350421² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100402350423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4547117030 + ... + 4547117271.

It is an arithmetic number, because the mean of its divisors is an integer number (201588860361).

Almost surely, 2^{1100402350421} is an apocalyptic number.

1100402350421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1100402350421 is a deficient number, since it is larger than the sum of its proper divisors (109130811745).

1100402350421 is an equidigital number, since it uses as much as digits as its factorization.

1100402350421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9094234323 (or 9094234312 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 1100402350421 its reverse (1240532040011), we get a palindrome (2340934390432).

The spelling of 1100402350421 in words is "one trillion, one hundred billion, four hundred two million, three hundred fifty thousand, four hundred twenty-one".