2121717212097 has 32 divisors (see below), whose sum is σ = 3379409897472. Its totient is φ = 1157720577024.

The previous prime is 2121717212077. The next prime is 2121717212149. The reversal of 2121717212097 is 7902127171212.

It is not a de Polignac number, because 2121717212097 - 2¹² = 2121717208001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2121717212077) 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, 3458208 + ... + 4025249.

It is an arithmetic number, because the mean of its divisors is an integer number (105606559296).

Almost surely, 2^{2121717212097} is an apocalyptic number.

It is an amenable number.

2121717212097 is a deficient number, since it is larger than the sum of its proper divisors (1257692685375).

2121717212097 is a wasteful number, since it uses less digits than its factorization.

2121717212097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7484077.

The product of its (nonzero) digits is 49392, while the sum is 42.

The spelling of 2121717212097 in words is "two trillion, one hundred twenty-one billion, seven hundred seventeen million, two hundred twelve thousand, ninety-seven".