70223532221 has 4 divisors (see below), whose sum is σ = 74354328252. Its totient is φ = 66092736192.

The previous prime is 70223532193. The next prime is 70223532227. The reversal of 70223532221 is 12223532207.

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 44599526596 + 25624005625 = 211186^2 + 160075^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70223532221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70223532227) 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, 2065397990 + ... + 2065398023.

It is an arithmetic number, because the mean of its divisors is an integer number (18588582063).

Almost surely, 2^70223532221 is an apocalyptic number.

It is an amenable number.

70223532221 is a deficient number, since it is larger than the sum of its proper divisors (4130796031).

70223532221 is a wasteful number, since it uses less digits than its factorization.

70223532221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4130796030.

The product of its (nonzero) digits is 10080, while the sum is 29.

The spelling of 70223532221 in words is "seventy billion, two hundred twenty-three million, five hundred thirty-two thousand, two hundred twenty-one".