21050414411 has 8 divisors (see below), whose sum is σ = 23451390480. Its totient is φ = 18761111712.

The previous prime is 21050414351. The next prime is 21050414447. The reversal of 21050414411 is 11441405012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21050414411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21050414491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27917945 + ... + 27918698.

It is an arithmetic number, because the mean of its divisors is an integer number (2931423810).

Almost surely, 2^21050414411 is an apocalyptic number.

21050414411 is a deficient number, since it is larger than the sum of its proper divisors (2400976069).

21050414411 is a wasteful number, since it uses less digits than its factorization.

21050414411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55836685.

The product of its (nonzero) digits is 640, while the sum is 23.

Adding to 21050414411 its reverse (11441405012), we get a palindrome (32491819423).

The spelling of 21050414411 in words is "twenty-one billion, fifty million, four hundred fourteen thousand, four hundred eleven".