1111401203421 has 16 divisors (see below), whose sum is σ = 1505190200000. Its totient is φ = 729290884608.

The previous prime is 1111401203309. The next prime is 1111401203461. The reversal of 1111401203421 is 1243021041111.

It is not a de Polignac number, because 1111401203421 - 2⁹ = 1111401202909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111401203461) 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, 1962466 + ... + 2464563.

It is an arithmetic number, because the mean of its divisors is an integer number (94074387500).

Almost surely, 2^{1111401203421} is an apocalyptic number.

It is an amenable number.

1111401203421 is a deficient number, since it is larger than the sum of its proper divisors (393788996579).

1111401203421 is a wasteful number, since it uses less digits than its factorization.

1111401203421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4428348.

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

Adding to 1111401203421 its reverse (1243021041111), we get a palindrome (2354422244532).

The spelling of 1111401203421 in words is "one trillion, one hundred eleven billion, four hundred one million, two hundred three thousand, four hundred twenty-one".