2021502147 has 16 divisors (see below), whose sum is σ = 3261583872. Its totient is φ = 1087194240.

The previous prime is 2021502143. The next prime is 2021502151. The reversal of 2021502147 is 7412051202.

It is an interprime number because it is at equal distance from previous prime (2021502143) and next prime (2021502151).

It is not a de Polignac number, because 2021502147 - 2² = 2021502143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2021502143) 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, 2830879 + ... + 2831592.

It is an arithmetic number, because the mean of its divisors is an integer number (203848992).

Almost surely, 2^2021502147 is an apocalyptic number.

2021502147 is a deficient number, since it is larger than the sum of its proper divisors (1240081725).

2021502147 is a wasteful number, since it uses less digits than its factorization.

2021502147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5662498.

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 2021502147 is about 44961.1181689246. The cubic root of 2021502147 is about 1264.4201328233.

Adding to 2021502147 its reverse (7412051202), we get a palindrome (9433553349).

The spelling of 2021502147 in words is "two billion, twenty-one million, five hundred two thousand, one hundred forty-seven".