221150061 has 32 divisors (see below), whose sum is σ = 360806400. Its totient is φ = 132758640.

The previous prime is 221150057. The next prime is 221150077. The reversal of 221150061 is 160051122.

It is not a de Polignac number, because 221150061 - 2² = 221150057 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221150021) 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, 28300 + ... + 35258.

It is an arithmetic number, because the mean of its divisors is an integer number (11275200).

Almost surely, 2^221150061 is an apocalyptic number.

It is an amenable number.

221150061 is a deficient number, since it is larger than the sum of its proper divisors (139656339).

221150061 is a wasteful number, since it uses less digits than its factorization.

221150061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7086 (or 7080 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 221150061 is about 14871.1149884600. The cubic root of 221150061 is about 604.7311703212.

The spelling of 221150061 in words is "two hundred twenty-one million, one hundred fifty thousand, sixty-one".