21120300111203 has 2 divisors, whose sum is σ = 21120300111204. Its totient is φ = 21120300111202.

The previous prime is 21120300111191. The next prime is 21120300111269. The reversal of 21120300111203 is 30211100302112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21120300111203 - 2⁸ = 21120300110947 is a prime.

It is a super-2 number, since 2×21120300111203² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21120300111283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10560150055601 + 10560150055602.

It is an arithmetic number, because the mean of its divisors is an integer number (10560150055602).

Almost surely, 2^{21120300111203} is an apocalyptic number.

21120300111203 is a deficient number, since it is larger than the sum of its proper divisors (1).

21120300111203 is an equidigital number, since it uses as much as digits as its factorization.

21120300111203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 21120300111203 its reverse (30211100302112), we get a palindrome (51331400413315).

The spelling of 21120300111203 in words is "twenty-one trillion, one hundred twenty billion, three hundred million, one hundred eleven thousand, two hundred three".