21101130121230 has 48 divisors (see below), whose sum is σ = 54863170833744. Its totient is φ = 5626944184320.

The previous prime is 21101130121229. The next prime is 21101130121243. The reversal of 21101130121230 is 3212103110112.

21101130121230 is a `hidden beast` number, since 2 + 110 + 1 + 1 + 301 + 21 + 230 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34394265 + ... + 35002395.

It is an arithmetic number, because the mean of its divisors is an integer number (1142982725703).

Almost surely, 2^{21101130121230} is an apocalyptic number.

21101130121230 is an abundant number, since it is smaller than the sum of its proper divisors (33762040712514).

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

21101130121230 is a wasteful number, since it uses less digits than its factorization.

21101130121230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993681 (or 993678 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 21101130121230 its reverse (3212103110112), we get a palindrome (24313233231342).

The spelling of 21101130121230 in words is "twenty-one trillion, one hundred one billion, one hundred thirty million, one hundred twenty-one thousand, two hundred thirty".