21105150142101 has 8 divisors (see below), whose sum is σ = 28146340334400. Its totient is φ = 14067030022272.

The previous prime is 21105150142073. The next prime is 21105150142147. The reversal of 21105150142101 is 10124105150112.

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

It is not a de Polignac number, because 21105150142101 - 2¹⁹ = 21105149617813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21105150142201) 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, 767502076 + ... + 767529573.

It is an arithmetic number, because the mean of its divisors is an integer number (3518292541800).

Almost surely, 2^{21105150142101} is an apocalyptic number.

It is an amenable number.

21105150142101 is a deficient number, since it is larger than the sum of its proper divisors (7041190192299).

21105150142101 is a wasteful number, since it uses less digits than its factorization.

21105150142101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535036235.

The product of its (nonzero) digits is 400, while the sum is 24.

Adding to 21105150142101 its reverse (10124105150112), we get a palindrome (31229255292213).

The spelling of 21105150142101 in words is "twenty-one trillion, one hundred five billion, one hundred fifty million, one hundred forty-two thousand, one hundred one".