21354025030100 has 144 divisors (see below), whose sum is σ = 55562476440576. Its totient is φ = 6969055104000.

The previous prime is 21354025030073. The next prime is 21354025030139. The reversal of 21354025030100 is 103052045312.

It is a happy number.

It is a super-2 number, since 2×21354025030100² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21354025030100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6742337 + ... + 9389736.

Almost surely, 2^{21354025030100} is an apocalyptic number.

21354025030100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21354025030100 is an abundant number, since it is smaller than the sum of its proper divisors (34208451410476).

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

21354025030100 is a wasteful number, since it uses less digits than its factorization.

21354025030100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16132186 (or 16132179 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 21354025030100 its reverse (103052045312), we get a palindrome (21457077075412).

The spelling of 21354025030100 in words is "twenty-one trillion, three hundred fifty-four billion, twenty-five million, thirty thousand, one hundred".