121722652 has 24 divisors (see below), whose sum is σ = 228919824. Its totient is φ = 56424192.

The previous prime is 121722617. The next prime is 121722659. The reversal of 121722652 is 256227121.

It is a self number, because there is not a number n which added to its sum of digits gives 121722652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121722659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8803 + ... + 17914.

It is an arithmetic number, because the mean of its divisors is an integer number (9538326).

Almost surely, 2^121722652 is an apocalyptic number.

It is an amenable number.

121722652 is a deficient number, since it is larger than the sum of its proper divisors (107197172).

121722652 is a wasteful number, since it uses less digits than its factorization.

121722652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26805 (or 26803 counting only the distinct ones).

The product of its digits is 3360, while the sum is 28.

The square root of 121722652 is about 11032.7989195852. The cubic root of 121722652 is about 495.5914462161.

Adding to 121722652 its reverse (256227121), we get a palindrome (377949773).

The spelling of 121722652 in words is "one hundred twenty-one million, seven hundred twenty-two thousand, six hundred fifty-two".