121931948 has 6 divisors (see below), whose sum is σ = 213380916. Its totient is φ = 60965972.

The previous prime is 121931899. The next prime is 121931951. The reversal of 121931948 is 849139121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15241490 + ... + 15241497.

It is an arithmetic number, because the mean of its divisors is an integer number (35563486).

Almost surely, 2^121931948 is an apocalyptic number.

It is an amenable number.

121931948 is a deficient number, since it is larger than the sum of its proper divisors (91448968).

121931948 is a wasteful number, since it uses less digits than its factorization.

121931948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30482991 (or 30482989 counting only the distinct ones).

The product of its digits is 15552, while the sum is 38.

The square root of 121931948 is about 11042.2800181847. The cubic root of 121931948 is about 495.8753317876.

It can be divided in two parts, 12193 and 1948, that added together give a palindrome (14141).

The spelling of 121931948 in words is "one hundred twenty-one million, nine hundred thirty-one thousand, nine hundred forty-eight".