21122203232113 has 16 divisors (see below), whose sum is σ = 21167840296512. Its totient is φ = 21076634880000.

The previous prime is 21122203232093. The next prime is 21122203232189. The reversal of 21122203232113 is 31123230222112.

It is a cyclic number.

It is not a de Polignac number, because 21122203232113 - 2¹³ = 21122203223921 is a prime.

It is a super-2 number, since 2×21122203232113² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21122203230113) 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, 3744404773 + ... + 3744410413.

It is an arithmetic number, because the mean of its divisors is an integer number (1322990018532).

Almost surely, 2^{21122203232113} is an apocalyptic number.

It is an amenable number.

21122203232113 is a deficient number, since it is larger than the sum of its proper divisors (45637064399).

21122203232113 is a wasteful number, since it uses less digits than its factorization.

21122203232113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10416.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 21122203232113 its reverse (31123230222112), we get a palindrome (52245433454225).

The spelling of 21122203232113 in words is "twenty-one trillion, one hundred twenty-two billion, two hundred three million, two hundred thirty-two thousand, one hundred thirteen".