2021011321130 has 64 divisors (see below), whose sum is σ = 3878586180000. Its totient is φ = 755564617728.

The previous prime is 2021011321129. The next prime is 2021011321141. The reversal of 2021011321130 is 311231101202.

It can be written as a sum of positive squares in 16 ways, for example, as 51022226161 + 1969989094969 = 225881^2 + 1403563^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a junction number, because it is equal to n+sod(n) for n = 2021011321099 and 2021011321108.

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, 157774166 + ... + 157786974.

Almost surely, 2^{2021011321130} is an apocalyptic number.

2021011321130 is a deficient number, since it is larger than the sum of its proper divisors (1857574858870).

2021011321130 is a wasteful number, since it uses less digits than its factorization.

2021011321130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19211.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 2021011321130 its reverse (311231101202), we get a palindrome (2332242422332).

The spelling of 2021011321130 in words is "two trillion, twenty-one billion, eleven million, three hundred twenty-one thousand, one hundred thirty".