220961097 has 24 divisors (see below), whose sum is σ = 365777984. Its totient is φ = 125911584.

The previous prime is 220961071. The next prime is 220961107. The reversal of 220961097 is 790169022.

220961097 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 220961097 - 2¹² = 220957001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220961057) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18798 + ... + 28200.

Almost surely, 2^220961097 is an apocalyptic number.

It is an amenable number.

220961097 is a deficient number, since it is larger than the sum of its proper divisors (144816887).

220961097 is a wasteful number, since it uses less digits than its factorization.

220961097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9789 (or 9786 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 220961097 is about 14864.7602402461. The cubic root of 220961097 is about 604.5588816003.

The spelling of 220961097 in words is "two hundred twenty million, nine hundred sixty-one thousand, ninety-seven".