101001121993 has 4 divisors (see below), whose sum is σ = 101003693188. Its totient is φ = 100998550800.

The previous prime is 101001121909. The next prime is 101001122149. The reversal of 101001121993 is 399121100101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47966256144 + 53034865849 = 219012^2 + 230293^2 .

It is a cyclic number.

It is not a de Polignac number, because 101001121993 - 2¹⁷ = 101000990921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101001161993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1225746 + ... + 1305547.

It is an arithmetic number, because the mean of its divisors is an integer number (25250923297).

Almost surely, 2^101001121993 is an apocalyptic number.

It is an amenable number.

101001121993 is a deficient number, since it is larger than the sum of its proper divisors (2571195).

101001121993 is an equidigital number, since it uses as much as digits as its factorization.

101001121993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2571194.

The product of its (nonzero) digits is 486, while the sum is 28.

The spelling of 101001121993 in words is "one hundred one billion, one million, one hundred twenty-one thousand, nine hundred ninety-three".