102102121011 has 16 divisors (see below), whose sum is σ = 148528948608. Its totient is φ = 61873084800.

The previous prime is 102102120977. The next prime is 102102121013. The reversal of 102102121011 is 110121201201.

It is not a de Polignac number, because 102102121011 - 2⁹ = 102102120499 is a prime.

It is a super-2 number, since 2×102102121011² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (102102121013) 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, 129835 + ... + 470171.

It is an arithmetic number, because the mean of its divisors is an integer number (9283059288).

Almost surely, 2^102102121011 is an apocalyptic number.

102102121011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

102102121011 is a deficient number, since it is larger than the sum of its proper divisors (46426827597).

102102121011 is a wasteful number, since it uses less digits than its factorization.

102102121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349442.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 102102121011 its reverse (110121201201), we get a palindrome (212223322212).

The spelling of 102102121011 in words is "one hundred two billion, one hundred two million, one hundred twenty-one thousand, eleven".