991101000012212 has 12 divisors (see below), whose sum is σ = 1734430557772836. Its totient is φ = 495549412077120.

The previous prime is 991101000012203. The next prime is 991101000012241. The reversal of 991101000012212 is 212210000101199.

991101000012212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 507389860899856 + 483711139112356 = 22525316^2 + 21993434^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269930783 + ... + 273577830.

It is an arithmetic number, because the mean of its divisors is an integer number (144535879814403).

Almost surely, 2^{991101000012212} is an apocalyptic number.

It is an amenable number.

991101000012212 is a deficient number, since it is larger than the sum of its proper divisors (743329557760624).

991101000012212 is a wasteful number, since it uses less digits than its factorization.

991101000012212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543964498 (or 543964496 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 29.

The spelling of 991101000012212 in words is "nine hundred ninety-one trillion, one hundred one billion, twelve thousand, two hundred twelve".