21142033401 has 8 divisors (see below), whose sum is σ = 28193107264. Its totient is φ = 14092824240.

The previous prime is 21142033399. The next prime is 21142033403. The reversal of 21142033401 is 10433024112.

It is an interprime number because it is at equal distance from previous prime (21142033399) and next prime (21142033403).

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

It is not a de Polignac number, because 21142033401 - 2¹ = 21142033399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21142033403) 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, 439501 + ... + 485226.

It is an arithmetic number, because the mean of its divisors is an integer number (3524138408).

Almost surely, 2^21142033401 is an apocalyptic number.

It is an amenable number.

21142033401 is a deficient number, since it is larger than the sum of its proper divisors (7051073863).

21142033401 is an equidigital number, since it uses as much as digits as its factorization.

21142033401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932351.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21142033401 its reverse (10433024112), we get a palindrome (31575057513).

The spelling of 21142033401 in words is "twenty-one billion, one hundred forty-two million, thirty-three thousand, four hundred one".