21214026100454 has 16 divisors (see below), whose sum is σ = 36755852709456. Its totient is φ = 9075519187200.

The previous prime is 21214026100427. The next prime is 21214026100459. The reversal of 21214026100454 is 45400162041212.

It is a super-2 number, since 2×21214026100454² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21214026100454.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21214026100459) 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, 28360997087 + ... + 28360997834.

It is an arithmetic number, because the mean of its divisors is an integer number (2297240794341).

Almost surely, 2^{21214026100454} is an apocalyptic number.

21214026100454 is a deficient number, since it is larger than the sum of its proper divisors (15541826609002).

21214026100454 is a wasteful number, since it uses less digits than its factorization.

21214026100454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56721994951.

The product of its (nonzero) digits is 15360, while the sum is 32.

Adding to 21214026100454 its reverse (45400162041212), we get a palindrome (66614188141666).

The spelling of 21214026100454 in words is "twenty-one trillion, two hundred fourteen billion, twenty-six million, one hundred thousand, four hundred fifty-four".