222061161 has 32 divisors (see below), whose sum is σ = 349332480. Its totient is φ = 122821056.

The previous prime is 222061129. The next prime is 222061163. The reversal of 222061161 is 161160222.

222061161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 222061161 - 2⁵ = 222061129 is a prime.

It is a super-2 number, since 2×222061161² = 98622318449335842, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (222061163) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 175750 + ... + 177008.

It is an arithmetic number, because the mean of its divisors is an integer number (10916640).

Almost surely, 2^222061161 is an apocalyptic number.

222061161 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

222061161 is a deficient number, since it is larger than the sum of its proper divisors (127271319).

222061161 is a wasteful number, since it uses less digits than its factorization.

222061161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1533.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 222061161 is about 14901.7167131844. The cubic root of 222061161 is about 605.5604950783.

It can be divided in two parts, 222061 and 161, that added together give a palindrome (222222).

The spelling of 222061161 in words is "two hundred twenty-two million, sixty-one thousand, one hundred sixty-one".