1212100100993 has 16 divisors (see below), whose sum is σ = 1302256254720. Its totient is φ = 1125223171776.

The previous prime is 1212100100969. The next prime is 1212100101001. The reversal of 1212100100993 is 3990010012121.

It is a cyclic number.

It is not a de Polignac number, because 1212100100993 - 2¹⁶ = 1212100035457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212100100293) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 1456013 + ... + 2131706.

It is an arithmetic number, because the mean of its divisors is an integer number (81391015920).

Almost surely, 2^{1212100100993} is an apocalyptic number.

It is an amenable number.

1212100100993 is a deficient number, since it is larger than the sum of its proper divisors (90156153727).

1212100100993 is a wasteful number, since it uses less digits than its factorization.

1212100100993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3588176.

The product of its (nonzero) digits is 972, while the sum is 29.

The spelling of 1212100100993 in words is "one trillion, two hundred twelve billion, one hundred million, one hundred thousand, nine hundred ninety-three".