121220210012099 has 32 divisors (see below), whose sum is σ = 144608858634240. Its totient is φ = 100321362316800.

The previous prime is 121220210011993. The next prime is 121220210012129. The reversal of 121220210012099 is 990210012022121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121220210012099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121220210017099) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6189077 + ... + 16755449.

It is an arithmetic number, because the mean of its divisors is an integer number (4519026832320).

Almost surely, 2^{121220210012099} is an apocalyptic number.

121220210012099 is a deficient number, since it is larger than the sum of its proper divisors (23388648622141).

121220210012099 is a wasteful number, since it uses less digits than its factorization.

121220210012099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10568411.

The product of its (nonzero) digits is 2592, while the sum is 32.

The spelling of 121220210012099 in words is "one hundred twenty-one trillion, two hundred twenty billion, two hundred ten million, twelve thousand, ninety-nine".