21141420331 has 8 divisors (see below), whose sum is σ = 21825357824. Its totient is φ = 20457605160.

The previous prime is 21141420317. The next prime is 21141420341. The reversal of 21141420331 is 13302414112.

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

It is a cyclic number.

It is not a de Polignac number, because 21141420331 - 2⁵ = 21141420299 is a prime.

It is a super-2 number, since 2×21141420331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21141420341) 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, 431950 + ... + 478396.

It is an arithmetic number, because the mean of its divisors is an integer number (2728169728).

Almost surely, 2^21141420331 is an apocalyptic number.

21141420331 is a deficient number, since it is larger than the sum of its proper divisors (683937493).

21141420331 is a wasteful number, since it uses less digits than its factorization.

21141420331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61161.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21141420331 its reverse (13302414112), we get a palindrome (34443834443).

The spelling of 21141420331 in words is "twenty-one billion, one hundred forty-one million, four hundred twenty thousand, three hundred thirty-one".