21622315120754 has 4 divisors (see below), whose sum is σ = 32433472681134. Its totient is φ = 10811157560376.

The previous prime is 21622315120751. The next prime is 21622315120859. The reversal of 21622315120754 is 45702151322612.

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

It can be written as a sum of positive squares in only one way, i.e., 17075283450625 + 4547031670129 = 4132225^2 + 2132377^2 .

It is a super-2 number, since 2×21622315120754² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21622315120751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5405578780187 + ... + 5405578780190.

Almost surely, 2^{21622315120754} is an apocalyptic number.

21622315120754 is a deficient number, since it is larger than the sum of its proper divisors (10811157560380).

21622315120754 is a wasteful number, since it uses less digits than its factorization.

21622315120754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10811157560379.

The product of its (nonzero) digits is 201600, while the sum is 41.

The spelling of 21622315120754 in words is "twenty-one trillion, six hundred twenty-two billion, three hundred fifteen million, one hundred twenty thousand, seven hundred fifty-four".