21010030121130 has 32 divisors (see below), whose sum is σ = 50990634907200. Its totient is φ = 5539723297152.

The previous prime is 21010030121111. The next prime is 21010030121153. The reversal of 21010030121130 is 3112103001012.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3934459900 + ... + 3934465239.

It is an arithmetic number, because the mean of its divisors is an integer number (1593457340850).

Almost surely, 2^{21010030121130} is an apocalyptic number.

21010030121130 is an abundant number, since it is smaller than the sum of its proper divisors (29980604786070).

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

21010030121130 is a wasteful number, since it uses less digits than its factorization.

21010030121130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7868925238.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 21010030121130 its reverse (3112103001012), we get a palindrome (24122133122142).

The spelling of 21010030121130 in words is "twenty-one trillion, ten billion, thirty million, one hundred twenty-one thousand, one hundred thirty".