21214036545141 has 16 divisors (see below), whose sum is σ = 30859940187648. Its totient is φ = 12855675279600.

The previous prime is 21214036545139. The next prime is 21214036545293. The reversal of 21214036545141 is 14154563041212.

It is not a de Polignac number, because 21214036545141 - 2¹ = 21214036545139 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 21214036545141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21214036545941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32586955 + ... + 33231576.

It is an arithmetic number, because the mean of its divisors is an integer number (1928746261728).

Almost surely, 2^{21214036545141} is an apocalyptic number.

It is an amenable number.

21214036545141 is a deficient number, since it is larger than the sum of its proper divisors (9645903642507).

21214036545141 is a wasteful number, since it uses less digits than its factorization.

21214036545141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65828312.

The product of its (nonzero) digits is 115200, while the sum is 39.

Adding to 21214036545141 its reverse (14154563041212), we get a palindrome (35368599586353).

The spelling of 21214036545141 in words is "twenty-one trillion, two hundred fourteen billion, thirty-six million, five hundred forty-five thousand, one hundred forty-one".