121040442150666 has 32 divisors (see below), whose sum is σ = 243625257960000. Its totient is φ = 40090124603520.

The previous prime is 121040442150601. The next prime is 121040442150751. The reversal of 121040442150666 is 666051244040121.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87584395 + ... + 88955646.

It is an arithmetic number, because the mean of its divisors is an integer number (7613289311250).

Almost surely, 2^{121040442150666} is an apocalyptic number.

121040442150666 is an abundant number, since it is smaller than the sum of its proper divisors (122584815809334).

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

121040442150666 is a wasteful number, since it uses less digits than its factorization.

121040442150666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176540774.

The product of its (nonzero) digits is 276480, while the sum is 42.

Adding to 121040442150666 its reverse (666051244040121), we get a palindrome (787091686190787).

The spelling of 121040442150666 in words is "one hundred twenty-one trillion, forty billion, four hundred forty-two million, one hundred fifty thousand, six hundred sixty-six".