121623650 has 24 divisors (see below), whose sum is σ = 226701264. Its totient is φ = 48546000.

The previous prime is 121623647. The next prime is 121623659. The reversal of 121623650 is 56326121.

It is not an unprimeable number, because it can be changed into a prime (121623659) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23825 + ... + 28475.

It is an arithmetic number, because the mean of its divisors is an integer number (9445886).

Almost surely, 2^121623650 is an apocalyptic number.

121623650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121623650 is a deficient number, since it is larger than the sum of its proper divisors (105077614).

121623650 is a wasteful number, since it uses less digits than its factorization.

121623650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5186 (or 5181 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 121623650 is about 11028.3112941193. The cubic root of 121623650 is about 495.4570481901.

Adding to 121623650 its reverse (56326121), we get a palindrome (177949771).

The spelling of 121623650 in words is "one hundred twenty-one million, six hundred twenty-three thousand, six hundred fifty".