1012030121 has 4 divisors (see below), whose sum is σ = 1012141572. Its totient is φ = 1011918672.

The previous prime is 1012030091. The next prime is 1012030133. The reversal of 1012030121 is 1210302101.

1012030121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1210302101 = 109 ⋅11103689.

It can be written as a sum of positive squares in 2 ways, for example, as 257923600 + 754106521 = 16060^2 + 27461^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012030121 - 2⁶ = 1012030057 is a prime.

It is a super-2 number, since 2×1012030121² = 2048409931622549282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012032121) 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, 40766 + ... + 60711.

It is an arithmetic number, because the mean of its divisors is an integer number (253035393).

Almost surely, 2^1012030121 is an apocalyptic number.

It is an amenable number.

1012030121 is a deficient number, since it is larger than the sum of its proper divisors (111451).

1012030121 is an equidigital number, since it uses as much as digits as its factorization.

1012030121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111450.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1012030121 is about 31812.4208604124. The cubic root of 1012030121 is about 1003.9940665274.

Adding to 1012030121 its reverse (1210302101), we get a palindrome (2222332222).

The spelling of 1012030121 in words is "one billion, twelve million, thirty thousand, one hundred twenty-one".