121045650 has 48 divisors (see below), whose sum is σ = 327487968. Its totient is φ = 29344000.

The previous prime is 121045649. The next prime is 121045651. The reversal of 121045650 is 56540121.

It is an interprime number because it is at equal distance from previous prime (121045649) and next prime (121045651).

It is a self number, because there is not a number n which added to its sum of digits gives 121045650.

It is not an unprimeable number, because it can be changed into a prime (121045651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35031 + ... + 38330.

It is an arithmetic number, because the mean of its divisors is an integer number (6822666).

Almost surely, 2^121045650 is an apocalyptic number.

121045650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121045650 is an abundant number, since it is smaller than the sum of its proper divisors (206442318).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121045650 is a wasteful number, since it uses less digits than its factorization.

121045650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73387 (or 73382 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 121045650 is about 11002.0748043267. The cubic root of 121045650 is about 494.6709373009.

Adding to 121045650 its reverse (56540121), we get a palindrome (177585771).

The spelling of 121045650 in words is "one hundred twenty-one million, forty-five thousand, six hundred fifty".