49201221 has 16 divisors (see below), whose sum is σ = 67233600. Its totient is φ = 31993728.

The previous prime is 49201211. The next prime is 49201259. The reversal of 49201221 is 12210294.

It is not a de Polignac number, because 49201221 - 2⁷ = 49201093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49201211) 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, 23235 + ... + 25263.

It is an arithmetic number, because the mean of its divisors is an integer number (4202100).

Almost surely, 2^49201221 is an apocalyptic number.

It is an amenable number.

49201221 is a deficient number, since it is larger than the sum of its proper divisors (18032379).

49201221 is a wasteful number, since it uses less digits than its factorization.

49201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2228.

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

The square root of 49201221 is about 7014.3582030005. The cubic root of 49201221 is about 366.4307910860.

The spelling of 49201221 in words is "forty-nine million, two hundred one thousand, two hundred twenty-one".