121122000210978 has 40 divisors (see below), whose sum is σ = 292280154360348. Its totient is φ = 37268307756576.

The previous prime is 121122000210949. The next prime is 121122000210979. The reversal of 121122000210978 is 879012000221121.

121122000210978 is a `hidden beast` number, since 1 + 211 + 220 + 0 + 0 + 210 + 9 + 7 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 121118983235649 + 3016975329 = 11005407^2 + 54927^2 .

It is not an unprimeable number, because it can be changed into a prime (121122000210979) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 28756408201 + ... + 28756412412.

Almost surely, 2^{121122000210978} is an apocalyptic number.

121122000210978 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

121122000210978 is an abundant number, since it is smaller than the sum of its proper divisors (171158154149370).

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

121122000210978 is a wasteful number, since it uses less digits than its factorization.

121122000210978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57512820640 (or 57512820631 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The spelling of 121122000210978 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, two hundred ten thousand, nine hundred seventy-eight".