21103411401420 has 72 divisors (see below), whose sum is σ = 62769870088464. Its totient is φ = 5296542465024.

The previous prime is 21103411401361. The next prime is 21103411401461. The reversal of 21103411401420 is 2410411430112.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 608500867 + ... + 608535546.

Almost surely, 2^{21103411401420} is an apocalyptic number.

21103411401420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21103411401420 is an abundant number, since it is smaller than the sum of its proper divisors (41666458687044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21103411401420 is a wasteful number, since it uses less digits than its factorization.

21103411401420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1217036459 (or 1217036440 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 21103411401420 its reverse (2410411430112), we get a palindrome (23513822831532).

The spelling of 21103411401420 in words is "twenty-one trillion, one hundred three billion, four hundred eleven million, four hundred one thousand, four hundred twenty".