21032121414 has 32 divisors (see below), whose sum is σ = 43827840000. Its totient is φ = 6720253344.

The previous prime is 21032121379. The next prime is 21032121427. The reversal of 21032121414 is 41412123012.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 410614 + ... + 458985.

It is an arithmetic number, because the mean of its divisors is an integer number (1369620000).

Almost surely, 2^21032121414 is an apocalyptic number.

21032121414 is an abundant number, since it is smaller than the sum of its proper divisors (22795718586).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21032121414 is a wasteful number, since it uses less digits than its factorization.

21032121414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869772.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 21032121414 its reverse (41412123012), we get a palindrome (62444244426).

The spelling of 21032121414 in words is "twenty-one billion, thirty-two million, one hundred twenty-one thousand, four hundred fourteen".