9091202820212 has 6 divisors (see below), whose sum is σ = 15909604935378. Its totient is φ = 4545601410104.

The previous prime is 9091202820181. The next prime is 9091202820257. The reversal of 9091202820212 is 2120282021909.

It can be written as a sum of positive squares in only one way, i.e., 7098153463696 + 1993049356516 = 2664236^2 + 1411754^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1136400352523 + ... + 1136400352530.

It is an arithmetic number, because the mean of its divisors is an integer number (2651600822563).

Almost surely, 2^{9091202820212} is an apocalyptic number.

It is an amenable number.

9091202820212 is a deficient number, since it is larger than the sum of its proper divisors (6818402115166).

9091202820212 is a wasteful number, since it uses less digits than its factorization.

9091202820212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2272800705057 (or 2272800705055 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

The spelling of 9091202820212 in words is "nine trillion, ninety-one billion, two hundred two million, eight hundred twenty thousand, two hundred twelve".