121554033416 has 8 divisors (see below), whose sum is σ = 227913812670. Its totient is φ = 60777016704.

The previous prime is 121554033407. The next prime is 121554033427. The reversal of 121554033416 is 614330455121.

It can be written as a sum of positive squares in only one way, i.e., 121554033316 + 100 = 348646^2 + 10^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7597127081 + ... + 7597127096.

Almost surely, 2^121554033416 is an apocalyptic number.

It is an amenable number.

121554033416 is a deficient number, since it is larger than the sum of its proper divisors (106359779254).

121554033416 is a wasteful number, since it uses less digits than its factorization.

121554033416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15194254183 (or 15194254179 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

Adding to 121554033416 its reverse (614330455121), we get a palindrome (735884488537).

The spelling of 121554033416 in words is "one hundred twenty-one billion, five hundred fifty-four million, thirty-three thousand, four hundred sixteen".