91001211011002 has 16 divisors (see below), whose sum is σ = 139676645398752. Its totient is φ = 44442334787760.

The previous prime is 91001211010999. The next prime is 91001211011017. The reversal of 91001211011002 is 20011011210019.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37806093 + ... + 40141039.

It is an arithmetic number, because the mean of its divisors is an integer number (8729790337422).

Almost surely, 2^{91001211011002} is an apocalyptic number.

91001211011002 is a deficient number, since it is larger than the sum of its proper divisors (48675434387750).

91001211011002 is a wasteful number, since it uses less digits than its factorization.

91001211011002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2788173.

The product of its (nonzero) digits is 36, while the sum is 19.

The spelling of 91001211011002 in words is "ninety-one trillion, one billion, two hundred eleven million, eleven thousand, two".