21111241230030 has 64 divisors (see below), whose sum is σ = 57937093959168. Its totient is φ = 4822761970560.

The previous prime is 21111241230019. The next prime is 21111241230041. The reversal of 21111241230030 is 3003214211112.

It is an interprime number because it is at equal distance from previous prime (21111241230019) and next prime (21111241230041).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21111241229979 and 21111241230006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27374997 + ... + 28135616.

It is an arithmetic number, because the mean of its divisors is an integer number (905267093112).

Almost surely, 2^{21111241230030} is an apocalyptic number.

21111241230030 is an abundant number, since it is smaller than the sum of its proper divisors (36825852729138).

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

21111241230030 is a wasteful number, since it uses less digits than its factorization.

21111241230030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55512441.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 21111241230030 its reverse (3003214211112), we get a palindrome (24114455441142).

The spelling of 21111241230030 in words is "twenty-one trillion, one hundred eleven billion, two hundred forty-one million, two hundred thirty thousand, thirty".