1012052021 has 4 divisors (see below), whose sum is σ = 1012234944. Its totient is φ = 1011869100.

The previous prime is 1012052011. The next prime is 1012052023. The reversal of 1012052021 is 1202502101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1012052021 - 2¹⁴ = 1012035637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012051987 and 1012052005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012052023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82895 + ... + 94316.

It is an arithmetic number, because the mean of its divisors is an integer number (253058736).

Almost surely, 2^1012052021 is an apocalyptic number.

It is an amenable number.

1012052021 is a deficient number, since it is larger than the sum of its proper divisors (182923).

1012052021 is an equidigital number, since it uses as much as digits as its factorization.

1012052021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182922.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 1012052021 is about 31812.7650637287. The cubic root of 1012052021 is about 1004.0013085093.

Adding to 1012052021 its reverse (1202502101), we get a palindrome (2214554122).

The spelling of 1012052021 in words is "one billion, twelve million, fifty-two thousand, twenty-one".