121501956 has 48 divisors (see below), whose sum is σ = 290820096. Its totient is φ = 39463584.

The previous prime is 121501951. The next prime is 121501981. The reversal of 121501956 is 659105121.

It is not an unprimeable number, because it can be changed into a prime (121501951) 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, 206695 + ... + 207281.

It is an arithmetic number, because the mean of its divisors is an integer number (6058752).

Almost surely, 2^121501956 is an apocalyptic number.

It is an amenable number.

121501956 is an abundant number, since it is smaller than the sum of its proper divisors (169318140).

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

121501956 is a wasteful number, since it uses less digits than its factorization.

121501956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008 (or 1006 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 30.

The square root of 121501956 is about 11022.7925681290. The cubic root of 121501956 is about 495.2917451675.

The spelling of 121501956 in words is "one hundred twenty-one million, five hundred one thousand, nine hundred fifty-six".