21348445011 has 16 divisors (see below), whose sum is σ = 31725244800. Its totient is φ = 12690096768.

The previous prime is 21348445007. The next prime is 21348445031. The reversal of 21348445011 is 11054484312.

It is not a de Polignac number, because 21348445011 - 2² = 21348445007 is a prime.

It is a super-2 number, since 2×21348445011² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21348445031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11014741 + ... + 11016678.

It is an arithmetic number, because the mean of its divisors is an integer number (1982827800).

Almost surely, 2^21348445011 is an apocalyptic number.

21348445011 is a deficient number, since it is larger than the sum of its proper divisors (10376799789).

21348445011 is a wasteful number, since it uses less digits than its factorization.

21348445011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22031458.

The product of its (nonzero) digits is 15360, while the sum is 33.

The spelling of 21348445011 in words is "twenty-one billion, three hundred forty-eight million, four hundred forty-five thousand, eleven".