21020143130030 has 32 divisors (see below), whose sum is σ = 41279910363648. Its totient is φ = 7642948976800.

The previous prime is 21020143130011. The next prime is 21020143130039. The reversal of 21020143130030 is 3003134102012.

It is a junction number, because it is equal to n+sod(n) for n = 21020143129984 and 21020143130011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21020143130039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8100026 + ... + 10375485.

It is an arithmetic number, because the mean of its divisors is an integer number (1289997198864).

Almost surely, 2^{21020143130030} is an apocalyptic number.

21020143130030 is a deficient number, since it is larger than the sum of its proper divisors (20259767233618).

21020143130030 is a wasteful number, since it uses less digits than its factorization.

21020143130030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18485872.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21020143130030 its reverse (3003134102012), we get a palindrome (24023277232042).

The spelling of 21020143130030 in words is "twenty-one trillion, twenty billion, one hundred forty-three million, one hundred thirty thousand, thirty".