21225053043 has 12 divisors (see below), whose sum is σ = 30694962480. Its totient is φ = 14133164976.

The previous prime is 21225053033. The next prime is 21225053051. The reversal of 21225053043 is 34035052212.

It is a happy number.

21225053043 is a `hidden beast` number, since 2 + 122 + 5 + 0 + 530 + 4 + 3 = 666.

It is not a de Polignac number, because 21225053043 - 2⁸ = 21225052787 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21225052998 and 21225053016.

It is not an unprimeable number, because it can be changed into a prime (21225053033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1397896 + ... + 1412997.

It is an arithmetic number, because the mean of its divisors is an integer number (2557913540).

Almost surely, 2^21225053043 is an apocalyptic number.

21225053043 is a deficient number, since it is larger than the sum of its proper divisors (9469909437).

21225053043 is a wasteful number, since it uses less digits than its factorization.

21225053043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2811738 (or 2811735 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The spelling of 21225053043 in words is "twenty-one billion, two hundred twenty-five million, fifty-three thousand, forty-three".