2021020130 has 16 divisors (see below), whose sum is σ = 3644992440. Its totient is φ = 806817792.

The previous prime is 2021020091. The next prime is 2021020147. The reversal of 2021020130 is 310201202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1764924121 + 256096009 = 42011^2 + 16003^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193439 + ... + 203618.

Almost surely, 2^2021020130 is an apocalyptic number.

2021020130 is a deficient number, since it is larger than the sum of its proper divisors (1623972310).

2021020130 is a wasteful number, since it uses less digits than its factorization.

2021020130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397573.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 2021020130 is about 44955.7574733204. The cubic root of 2021020130 is about 1264.3196266315.

Adding to 2021020130 its reverse (310201202), we get a palindrome (2331221332).

The spelling of 2021020130 in words is "two billion, twenty-one million, twenty thousand, one hundred thirty".