1001210401 has 4 divisors (see below), whose sum is σ = 1044741312. Its totient is φ = 957679492.

The previous prime is 1001210341. The next prime is 1001210423. The reversal of 1001210401 is 1040121001.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1040121001 = 3119 ⋅333479.

It is a cyclic number.

It is not a de Polignac number, because 1001210401 - 2⁹ = 1001209889 is a prime.

It is a super-3 number, since 3×1001210401³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001210101) 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, 21765421 + ... + 21765466.

It is an arithmetic number, because the mean of its divisors is an integer number (261185328).

Almost surely, 2^1001210401 is an apocalyptic number.

It is an amenable number.

1001210401 is a deficient number, since it is larger than the sum of its proper divisors (43530911).

1001210401 is an equidigital number, since it uses as much as digits as its factorization.

1001210401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43530910.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1001210401 is about 31641.9089341967. The cubic root of 1001210401 is about 1000.4033043238.

Adding to 1001210401 its reverse (1040121001), we get a palindrome (2041331402).

The spelling of 1001210401 in words is "one billion, one million, two hundred ten thousand, four hundred one".