121211101101099 has 24 divisors (see below), whose sum is σ = 165711260047216. Its totient is φ = 78808651315200.

The previous prime is 121211101101089. The next prime is 121211101101133. The reversal of 121211101101099 is 990101101112121.

It is a de Polignac number, because none of the positive numbers 2^k-121211101101099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121211101101019) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10044759 + ... + 18528879.

Almost surely, 2^{121211101101099} is an apocalyptic number.

121211101101099 is a deficient number, since it is larger than the sum of its proper divisors (44500158946117).

121211101101099 is an equidigital number, since it uses as much as digits as its factorization.

121211101101099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8487039 (or 8486998 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 30.

The spelling of 121211101101099 in words is "one hundred twenty-one trillion, two hundred eleven billion, one hundred one million, one hundred one thousand, ninety-nine".