20010021130 has 32 divisors (see below), whose sum is σ = 39489897600. Its totient is φ = 7239798720.

The previous prime is 20010021103. The next prime is 20010021131. The reversal of 20010021130 is 3112001002.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (20010021131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 435169 + ... + 478948.

It is an arithmetic number, because the mean of its divisors is an integer number (1234059300).

Almost surely, 2^20010021130 is an apocalyptic number.

20010021130 is a deficient number, since it is larger than the sum of its proper divisors (19479876470).

20010021130 is a wasteful number, since it uses less digits than its factorization.

20010021130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914334.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 20010021130 its reverse (3112001002), we get a palindrome (23122022132).

The spelling of 20010021130 in words is "twenty billion, ten million, twenty-one thousand, one hundred thirty".