20522213401 has 8 divisors (see below), whose sum is σ = 20662190984. Its totient is φ = 20382710400.

The previous prime is 20522213317. The next prime is 20522213407. The reversal of 20522213401 is 10431222502.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1256773401 + 19265440000 = 35451^2 + 138800^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20522213401 - 2⁹ = 20522212889 is a prime.

It is a super-2 number, since 2×20522213401² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20522213407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31650 + ... + 205051.

It is an arithmetic number, because the mean of its divisors is an integer number (2582773873).

Almost surely, 2^20522213401 is an apocalyptic number.

It is an amenable number.

20522213401 is a deficient number, since it is larger than the sum of its proper divisors (139977583).

20522213401 is a wasteful number, since it uses less digits than its factorization.

20522213401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237291.

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 20522213401 its reverse (10431222502), we get a palindrome (30953435903).

The spelling of 20522213401 in words is "twenty billion, five hundred twenty-two million, two hundred thirteen thousand, four hundred one".