21112263030 has 64 divisors (see below), whose sum is σ = 52491110400. Its totient is φ = 5428080000.

The previous prime is 21112263019. The next prime is 21112263037. The reversal of 21112263030 is 3036221112.

It is a junction number, because it is equal to n+sod(n) for n = 21112262988 and 21112263006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21112263037) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 608655 + ... + 642405.

It is an arithmetic number, because the mean of its divisors is an integer number (820173600).

Almost surely, 2^21112263030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21112263030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26245555200).

21112263030 is an abundant number, since it is smaller than the sum of its proper divisors (31378847370).

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

21112263030 is a wasteful number, since it uses less digits than its factorization.

21112263030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34509.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21112263030 its reverse (3036221112), we get a palindrome (24148484142).

The spelling of 21112263030 in words is "twenty-one billion, one hundred twelve million, two hundred sixty-three thousand, thirty".