21214026151004 has 48 divisors (see below), whose sum is σ = 38145861629568. Its totient is φ = 10318153786368.

The previous prime is 21214026150997. The next prime is 21214026151013. The reversal of 21214026151004 is 40015162041212.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20030084 + ... + 21062580.

It is an arithmetic number, because the mean of its divisors is an integer number (794705450616).

Almost surely, 2^{21214026151004} is an apocalyptic number.

It is an amenable number.

21214026151004 is a deficient number, since it is larger than the sum of its proper divisors (16931835478564).

21214026151004 is a wasteful number, since it uses less digits than its factorization.

21214026151004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033214 (or 1033212 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

Adding to 21214026151004 its reverse (40015162041212), we get a palindrome (61229188192216).

The spelling of 21214026151004 in words is "twenty-one trillion, two hundred fourteen billion, twenty-six million, one hundred fifty-one thousand, four".