220454253121 has 4 divisors (see below), whose sum is σ = 230039220672. Its totient is φ = 210869285572.

The previous prime is 220454253079. The next prime is 220454253181. The reversal of 220454253121 is 121352454022.

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, and also an emirpimes, since its reverse is a distinct semiprime: 121352454022 = 2 ⋅60676227011.

It is a cyclic number.

It is not a de Polignac number, because 220454253121 - 2²⁷ = 220320035393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220454253181) 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, 4792483741 + ... + 4792483786.

It is an arithmetic number, because the mean of its divisors is an integer number (57509805168).

Almost surely, 2^220454253121 is an apocalyptic number.

It is an amenable number.

220454253121 is a deficient number, since it is larger than the sum of its proper divisors (9584967551).

220454253121 is an equidigital number, since it uses as much as digits as its factorization.

220454253121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9584967550.

The product of its (nonzero) digits is 19200, while the sum is 31.

The spelling of 220454253121 in words is "two hundred twenty billion, four hundred fifty-four million, two hundred fifty-three thousand, one hundred twenty-one".