1012050021 has 8 divisors (see below), whose sum is σ = 1380781600. Its totient is φ = 659009232.

The previous prime is 1012050007. The next prime is 1012050023. The reversal of 1012050021 is 1200502101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1012050021 - 2⁵ = 1012049989 is a prime.

It is a super-2 number, since 2×1012050021² = 2048490490012200882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1012049979 and 1012050006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012050023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3922546 + ... + 3922803.

It is an arithmetic number, because the mean of its divisors is an integer number (172597700).

Almost surely, 2^1012050021 is an apocalyptic number.

It is an amenable number.

1012050021 is a deficient number, since it is larger than the sum of its proper divisors (368731579).

1012050021 is an equidigital number, since it uses as much as digits as its factorization.

1012050021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7845395.

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 1012050021 is about 31812.7336297904. The cubic root of 1012050021 is about 1004.0006471454. Note that the first 3 decimals are identical.

Adding to 1012050021 its reverse (1200502101), we get a palindrome (2212552122).

The spelling of 1012050021 in words is "one billion, twelve million, fifty thousand, twenty-one".