221112629 has 4 divisors (see below), whose sum is σ = 227088684. Its totient is φ = 215136576.

The previous prime is 221112623. The next prime is 221112641. The reversal of 221112629 is 926211122.

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 91107025 + 130005604 = 9545^2 + 11402^2 .

It is a cyclic number.

It is not a de Polignac number, because 221112629 - 2¹⁶ = 221047093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221112598 and 221112607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221112623) 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, 2987972 + ... + 2988045.

It is an arithmetic number, because the mean of its divisors is an integer number (56772171).

Almost surely, 2^221112629 is an apocalyptic number.

It is an amenable number.

221112629 is a deficient number, since it is larger than the sum of its proper divisors (5976055).

221112629 is an equidigital number, since it uses as much as digits as its factorization.

221112629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5976054.

The product of its digits is 864, while the sum is 26.

The square root of 221112629 is about 14869.8563880086. The cubic root of 221112629 is about 604.6970493352.

The spelling of 221112629 in words is "two hundred twenty-one million, one hundred twelve thousand, six hundred twenty-nine".