21151224355030 has 32 divisors (see below), whose sum is σ = 47466643749120. Its totient is φ = 6592589409120.

The previous prime is 21151224355007. The next prime is 21151224355081. The reversal of 21151224355030 is 3055342215112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13734560500 + ... + 13734562039.

It is an arithmetic number, because the mean of its divisors is an integer number (1483332617160).

Almost surely, 2^{21151224355030} is an apocalyptic number.

21151224355030 is an abundant number, since it is smaller than the sum of its proper divisors (26315419394090).

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

21151224355030 is a wasteful number, since it uses less digits than its factorization.

21151224355030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27469122564.

The product of its (nonzero) digits is 36000, while the sum is 34.

It can be divided in two parts, 211512 and 24355030, that added together give a palindrome (24566542).

The spelling of 21151224355030 in words is "twenty-one trillion, one hundred fifty-one billion, two hundred twenty-four million, three hundred fifty-five thousand, thirty".