21126050426 has 32 divisors (see below), whose sum is σ = 34627824000. Its totient is φ = 9607469760.

The previous prime is 21126050401. The next prime is 21126050431. The reversal of 21126050426 is 62405062112.

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, 6088220 + ... + 6091688.

It is an arithmetic number, because the mean of its divisors is an integer number (1082119500).

Almost surely, 2^21126050426 is an apocalyptic number.

21126050426 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

21126050426 is a deficient number, since it is larger than the sum of its proper divisors (13501773574).

21126050426 is a wasteful number, since it uses less digits than its factorization.

21126050426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6854.

The product of its (nonzero) digits is 5760, while the sum is 29.

The spelling of 21126050426 in words is "twenty-one billion, one hundred twenty-six million, fifty thousand, four hundred twenty-six".