102211001993 has 4 divisors (see below), whose sum is σ = 102211741968. Its totient is φ = 102210262020.

The previous prime is 102211001987. The next prime is 102211002013. The reversal of 102211001993 is 399100112201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 102211001993 - 2²⁶ = 102143893129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102211001983) 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, 94343 + ... + 461868.

It is an arithmetic number, because the mean of its divisors is an integer number (25552935492).

Almost surely, 2^102211001993 is an apocalyptic number.

It is an amenable number.

102211001993 is a deficient number, since it is larger than the sum of its proper divisors (739975).

102211001993 is an equidigital number, since it uses as much as digits as its factorization.

102211001993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739974.

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

The spelling of 102211001993 in words is "one hundred two billion, two hundred eleven million, one thousand, nine hundred ninety-three".