9412901021 has 4 divisors (see below), whose sum is σ = 9437099100. Its totient is φ = 9388702944.

The previous prime is 9412901011. The next prime is 9412901053. The reversal of 9412901021 is 1201092149.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3062404921 + 6350496100 = 55339^2 + 79690^2 .

It is a cyclic number.

It is not a de Polignac number, because 9412901021 - 2⁶ = 9412900957 is a prime.

It is a super-2 number, since 2×9412901021² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9412901011) 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, 12098456 + ... + 12099233.

It is an arithmetic number, because the mean of its divisors is an integer number (2359274775).

Almost surely, 2^9412901021 is an apocalyptic number.

It is an amenable number.

9412901021 is a deficient number, since it is larger than the sum of its proper divisors (24198079).

9412901021 is a wasteful number, since it uses less digits than its factorization.

9412901021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24198078.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 9412901021 is about 97020.1062718445. The cubic root of 9412901021 is about 2111.4193501201.

The spelling of 9412901021 in words is "nine billion, four hundred twelve million, nine hundred one thousand, twenty-one".