63722121 has 8 divisors (see below), whose sum is σ = 88656960. Its totient is φ = 40634352.

The previous prime is 63722117. The next prime is 63722129. The reversal of 63722121 is 12122736.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 63722121 - 2² = 63722117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63722091 and 63722100.

It is not an unprimeable number, because it can be changed into a prime (63722129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 461686 + ... + 461823.

It is an arithmetic number, because the mean of its divisors is an integer number (11082120).

Almost surely, 2^63722121 is an apocalyptic number.

It is an amenable number.

63722121 is a deficient number, since it is larger than the sum of its proper divisors (24934839).

63722121 is a wasteful number, since it uses less digits than its factorization.

63722121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923535.

The product of its digits is 1008, while the sum is 24.

The square root of 63722121 is about 7982.6136697200. The cubic root of 63722121 is about 399.4202455345.

Adding to 63722121 its reverse (12122736), we get a palindrome (75844857).

The spelling of 63722121 in words is "sixty-three million, seven hundred twenty-two thousand, one hundred twenty-one".