121200212209997 has 32 divisors (see below), whose sum is σ = 129155031772800. Its totient is φ = 113569467863040.

The previous prime is 121200212209961. The next prime is 121200212210023. The reversal of 121200212209997 is 799902212002121.

It is a cyclic number.

It is not a de Polignac number, because 121200212209997 - 2¹² = 121200212205901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121200212209957) 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, 382997597 + ... + 383313917.

It is an arithmetic number, because the mean of its divisors is an integer number (4036094742900).

Almost surely, 2^{121200212209997} is an apocalyptic number.

It is an amenable number.

121200212209997 is a deficient number, since it is larger than the sum of its proper divisors (7954819562803).

121200212209997 is a wasteful number, since it uses less digits than its factorization.

121200212209997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319773.

The product of its (nonzero) digits is 163296, while the sum is 47.

The spelling of 121200212209997 in words is "one hundred twenty-one trillion, two hundred billion, two hundred twelve million, two hundred nine thousand, nine hundred ninety-seven".