102102001010191 has 32 divisors (see below), whose sum is σ = 134373387673728. Its totient is φ = 75279208550400.

The previous prime is 102102001010171. The next prime is 102102001010209. The reversal of 102102001010191 is 191010100201201.

It is a cyclic number.

It is not a de Polignac number, because 102102001010191 - 2⁷ = 102102001010063 is a prime.

It is a super-2 number, since 2×102102001010191² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102102001010171) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 326576430 + ... + 326888923.

It is an arithmetic number, because the mean of its divisors is an integer number (4199168364804).

Almost surely, 2^{102102001010191} is an apocalyptic number.

102102001010191 is a deficient number, since it is larger than the sum of its proper divisors (32271386663537).

102102001010191 is a wasteful number, since it uses less digits than its factorization.

102102001010191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653465491.

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

Adding to 102102001010191 its reverse (191010100201201), we get a palindrome (293112101211392).

The spelling of 102102001010191 in words is "one hundred two trillion, one hundred two billion, one million, ten thousand, one hundred ninety-one".