22061986891201 has 4 divisors (see below), whose sum is σ = 22062908892100. Its totient is φ = 22061064890304.

The previous prime is 22061986891193. The next prime is 22061986891253. The reversal of 22061986891201 is 10219868916022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5435654439601 + 16626332451600 = 2331449^2 + 4077540^2 .

It is a cyclic number.

It is not a de Polignac number, because 22061986891201 - 2³ = 22061986891193 is a prime.

It is a super-2 number, since 2×22061986891201² (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 (22061986891501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 460964556 + ... + 461012413.

It is an arithmetic number, because the mean of its divisors is an integer number (5515727223025).

Almost surely, 2^{22061986891201} is an apocalyptic number.

It is an amenable number.

22061986891201 is a deficient number, since it is larger than the sum of its proper divisors (922000899).

22061986891201 is an equidigital number, since it uses as much as digits as its factorization.

22061986891201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922000898.

The product of its (nonzero) digits is 1492992, while the sum is 55.

The spelling of 22061986891201 in words is "twenty-two trillion, sixty-one billion, nine hundred eighty-six million, eight hundred ninety-one thousand, two hundred one".