9891211101202 has 64 divisors (see below), whose sum is σ = 16547505408000. Its totient is φ = 4413103326720.

The previous prime is 9891211101169. The next prime is 9891211101223. The reversal of 9891211101202 is 2021011121989.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16577677 + ... + 17163967.

It is an arithmetic number, because the mean of its divisors is an integer number (258554772000).

Almost surely, 2^{9891211101202} is an apocalyptic number.

9891211101202 is a deficient number, since it is larger than the sum of its proper divisors (6656294306798).

9891211101202 is a wasteful number, since it uses less digits than its factorization.

9891211101202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586631.

The product of its (nonzero) digits is 5184, while the sum is 37.

The spelling of 9891211101202 in words is "nine trillion, eight hundred ninety-one billion, two hundred eleven million, one hundred one thousand, two hundred two".