21112101001230 has 64 divisors (see below), whose sum is σ = 53655381875520. Its totient is φ = 5298149801984.

The previous prime is 21112101001223. The next prime is 21112101001391. The reversal of 21112101001230 is 3210010121112.

It is a super-2 number, since 2×21112101001230² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 2485126 + ... + 6957014.

It is an arithmetic number, because the mean of its divisors is an integer number (838365341805).

Almost surely, 2^{21112101001230} is an apocalyptic number.

21112101001230 is an abundant number, since it is smaller than the sum of its proper divisors (32543280874290).

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

21112101001230 is a wasteful number, since it uses less digits than its factorization.

21112101001230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4481173.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 21112101001230 its reverse (3210010121112), we get a palindrome (24322111122342).

The spelling of 21112101001230 in words is "twenty-one trillion, one hundred twelve billion, one hundred one million, one thousand, two hundred thirty".