121651296446 has 32 divisors (see below), whose sum is σ = 192198528000. Its totient is φ = 57636865440.

The previous prime is 121651296443. The next prime is 121651296463. The reversal of 121651296446 is 644692156121.

It is a self number, because there is not a number n which added to its sum of digits gives 121651296446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121651296443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2574251 + ... + 2621081.

It is an arithmetic number, because the mean of its divisors is an integer number (6006204000).

Almost surely, 2^121651296446 is an apocalyptic number.

121651296446 is a deficient number, since it is larger than the sum of its proper divisors (70547231554).

121651296446 is a wasteful number, since it uses less digits than its factorization.

121651296446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47384.

The product of its digits is 622080, while the sum is 47.

The spelling of 121651296446 in words is "one hundred twenty-one billion, six hundred fifty-one million, two hundred ninety-six thousand, four hundred forty-six".