102020120111 has 16 divisors (see below), whose sum is σ = 125715147264. Its totient is φ = 80621551584.

The previous prime is 102020120107. The next prime is 102020120113. The reversal of 102020120111 is 111021020201.

It is not a de Polignac number, because 102020120111 - 2² = 102020120107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102020120092 and 102020120101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102020120113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 602555 + ... + 753068.

It is an arithmetic number, because the mean of its divisors is an integer number (7857196704).

Almost surely, 2^102020120111 is an apocalyptic number.

102020120111 is a deficient number, since it is larger than the sum of its proper divisors (23695027153).

102020120111 is a wasteful number, since it uses less digits than its factorization.

102020120111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356470.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 102020120111 its reverse (111021020201), we get a palindrome (213041140312).

The spelling of 102020120111 in words is "one hundred two billion, twenty million, one hundred twenty thousand, one hundred eleven".