21121413141 has 8 divisors (see below), whose sum is σ = 28163121760. Its totient is φ = 14080323312.

The previous prime is 21121413133. The next prime is 21121413149. The reversal of 21121413141 is 14131412112.

It is an interprime number because it is at equal distance from previous prime (21121413133) and next prime (21121413149).

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

It is not a de Polignac number, because 21121413141 - 2³ = 21121413133 is a prime.

It is a super-2 number, since 2×21121413141² (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 (21121413149) 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, 68131 + ... + 216528.

It is an arithmetic number, because the mean of its divisors is an integer number (3520390220).

Almost surely, 2^21121413141 is an apocalyptic number.

It is an amenable number.

21121413141 is a deficient number, since it is larger than the sum of its proper divisors (7041708619).

21121413141 is a wasteful number, since it uses less digits than its factorization.

21121413141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309395.

The product of its digits is 192, while the sum is 21.

Adding to 21121413141 its reverse (14131412112), we get a palindrome (35252825253).

The spelling of 21121413141 in words is "twenty-one billion, one hundred twenty-one million, four hundred thirteen thousand, one hundred forty-one".