21013401035 has 16 divisors (see below), whose sum is σ = 28148186880. Its totient is φ = 14927065440.

The previous prime is 21013401007. The next prime is 21013401061. The reversal of 21013401035 is 53010431012.

It is not a de Polignac number, because 21013401035 - 2¹⁸ = 21013138891 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21013400998 and 21013401016.

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, 4440215 + ... + 4444944.

It is an arithmetic number, because the mean of its divisors is an integer number (1759261680).

Almost surely, 2^21013401035 is an apocalyptic number.

21013401035 is a deficient number, since it is larger than the sum of its proper divisors (7134785845).

21013401035 is a wasteful number, since it uses less digits than its factorization.

21013401035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8885218.

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 21013401035 its reverse (53010431012), we get a palindrome (74023832047).

The spelling of 21013401035 in words is "twenty-one billion, thirteen million, four hundred one thousand, thirty-five".