102020211123131 has 4 divisors (see below), whose sum is σ = 116594526997872. Its totient is φ = 87445895248392.

The previous prime is 102020211123109. The next prime is 102020211123133. The reversal of 102020211123131 is 131321112020201.

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

It is a cyclic number.

It is not a de Polignac number, because 102020211123131 - 2¹⁸ = 102020210860987 is a prime.

It is a super-3 number, since 3×102020211123131³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (102020211123133) 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, 7287157937360 + ... + 7287157937373.

It is an arithmetic number, because the mean of its divisors is an integer number (29148631749468).

Almost surely, 2^{102020211123131} is an apocalyptic number.

102020211123131 is a deficient number, since it is larger than the sum of its proper divisors (14574315874741).

102020211123131 is an equidigital number, since it uses as much as digits as its factorization.

102020211123131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14574315874740.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 102020211123131 its reverse (131321112020201), we get a palindrome (233341323143332).

The spelling of 102020211123131 in words is "one hundred two trillion, twenty billion, two hundred eleven million, one hundred twenty-three thousand, one hundred thirty-one".