21425102334 has 24 divisors (see below), whose sum is σ = 46522650720. Its totient is φ = 7126070688.

The previous prime is 21425102291. The next prime is 21425102341. The reversal of 21425102334 is 43320152412.

21425102334 is a `hidden beast` number, since 2 + 1 + 425 + 1 + 0 + 233 + 4 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 21425102298 and 21425102307.

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, 1294054 + ... + 1310505.

It is an arithmetic number, because the mean of its divisors is an integer number (1938443780).

Almost surely, 2^21425102334 is an apocalyptic number.

21425102334 is an abundant number, since it is smaller than the sum of its proper divisors (25097548386).

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

21425102334 is a wasteful number, since it uses less digits than its factorization.

21425102334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2605024 (or 2605021 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 21425102334 its reverse (43320152412), we get a palindrome (64745254746).

The spelling of 21425102334 in words is "twenty-one billion, four hundred twenty-five million, one hundred two thousand, three hundred thirty-four".