21442276350237 has 4 divisors (see below), whose sum is σ = 28589701800320. Its totient is φ = 14294850900156.

The previous prime is 21442276350199. The next prime is 21442276350293. The reversal of 21442276350237 is 73205367224412.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 21442276350237 - 2²² = 21442272155933 is a prime.

It is a super-2 number, since 2×21442276350237² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21442276350337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3573712725037 + ... + 3573712725042.

It is an arithmetic number, because the mean of its divisors is an integer number (7147425450080).

Almost surely, 2^{21442276350237} is an apocalyptic number.

It is an amenable number.

21442276350237 is a deficient number, since it is larger than the sum of its proper divisors (7147425450083).

21442276350237 is an equidigital number, since it uses as much as digits as its factorization.

21442276350237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7147425450082.

The product of its (nonzero) digits is 3386880, while the sum is 48.

The spelling of 21442276350237 in words is "twenty-one trillion, four hundred forty-two billion, two hundred seventy-six million, three hundred fifty thousand, two hundred thirty-seven".