2021013002 has 4 divisors (see below), whose sum is σ = 3031519506. Its totient is φ = 1010506500.

The previous prime is 2021012999. The next prime is 2021013077. The reversal of 2021013002 is 2003101202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2003101202 = 2 ⋅1001550601.

It can be written as a sum of positive squares in only one way, i.e., 1738806601 + 282206401 = 41699^2 + 16799^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505253249 + ... + 505253252.

Almost surely, 2^2021013002 is an apocalyptic number.

2021013002 is a deficient number, since it is larger than the sum of its proper divisors (1010506504).

2021013002 is a wasteful number, since it uses less digits than its factorization.

2021013002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010506503.

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

The square root of 2021013002 is about 44955.6781953070. The cubic root of 2021013002 is about 1264.3181402401.

Adding to 2021013002 its reverse (2003101202), we get a palindrome (4024114204).

The spelling of 2021013002 in words is "two billion, twenty-one million, thirteen thousand, two".