21020402314224 has 60 divisors (see below), whose sum is σ = 58828320965232. Its totient is φ = 7006754380800.

The previous prime is 21020402314169. The next prime is 21020402314231. The reversal of 21020402314224 is 42241320402012.

It is a happy number.

21020402314224 is a `hidden beast` number, since 2 + 1 + 0 + 2 + 0 + 4 + 0 + 231 + 422 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26590429 + ... + 27369539.

Almost surely, 2^{21020402314224} is an apocalyptic number.

21020402314224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21020402314224 is an abundant number, since it is smaller than the sum of its proper divisors (37807918651008).

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

21020402314224 is a wasteful number, since it uses less digits than its factorization.

21020402314224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 966486 (or 966477 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 21020402314224 its reverse (42241320402012), we get a palindrome (63261722716236).

The spelling of 21020402314224 in words is "twenty-one trillion, twenty billion, four hundred two million, three hundred fourteen thousand, two hundred twenty-four".