121566742302 has 16 divisors (see below), whose sum is σ = 245494005120. Its totient is φ = 40128827352.

The previous prime is 121566742277. The next prime is 121566742303. The reversal of 121566742302 is 203247665121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121566742303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98354352 + ... + 98355587.

It is an arithmetic number, because the mean of its divisors is an integer number (15343375320).

Almost surely, 2^121566742302 is an apocalyptic number.

121566742302 is an abundant number, since it is smaller than the sum of its proper divisors (123927262818).

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

121566742302 is a wasteful number, since it uses less digits than its factorization.

121566742302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196710047.

The product of its (nonzero) digits is 120960, while the sum is 39.

The spelling of 121566742302 in words is "one hundred twenty-one billion, five hundred sixty-six million, seven hundred forty-two thousand, three hundred two".