221062361 has 16 divisors (see below), whose sum is σ = 249588864. Its totient is φ = 194265984.

The previous prime is 221062357. The next prime is 221062381. The reversal of 221062361 is 163260122.

221062361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 221062361 - 2² = 221062357 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221062301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66245 + ... + 69501.

It is an arithmetic number, because the mean of its divisors is an integer number (15599304).

Almost surely, 2^221062361 is an apocalyptic number.

It is an amenable number.

221062361 is a deficient number, since it is larger than the sum of its proper divisors (28526503).

221062361 is a wasteful number, since it uses less digits than its factorization.

221062361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3520.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 221062361 is about 14868.1660267835. The cubic root of 221062361 is about 604.6512216874.

The spelling of 221062361 in words is "two hundred twenty-one million, sixty-two thousand, three hundred sixty-one".