10021401 has 40 divisors (see below), whose sum is σ = 16696064. Its totient is φ = 5948640.

The previous prime is 10021393. The next prime is 10021411. The reversal of 10021401 is 10412001.

It is a happy number.

It is not a de Polignac number, because 10021401 - 2³ = 10021393 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10021411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 32490 + ... + 32796.

Almost surely, 2^10021401 is an apocalyptic number.

It is an amenable number.

10021401 is a deficient number, since it is larger than the sum of its proper divisors (6674663).

10021401 is a wasteful number, since it uses less digits than its factorization.

10021401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363 (or 354 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 10021401 is about 3165.6596468983. The cubic root of 10021401 is about 215.5970496852.

Adding to 10021401 its reverse (10412001), we get a palindrome (20433402).

The spelling of 10021401 in words is "ten million, twenty-one thousand, four hundred one".