102102553100 has 18 divisors (see below), whose sum is σ = 221562540444. Its totient is φ = 40841021200.

The previous prime is 102102553037. The next prime is 102102553117. The reversal of 102102553100 is 1355201201.

It is a happy number.

It is a super-2 number, since 2×102102553100² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 510512666 + ... + 510512865.

Almost surely, 2^102102553100 is an apocalyptic number.

102102553100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102102553100 is an abundant number, since it is smaller than the sum of its proper divisors (119459987344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102102553100 is a wasteful number, since it uses less digits than its factorization.

102102553100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021025545 (or 1021025538 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

Adding to 102102553100 its reverse (1355201201), we get a palindrome (103457754301).

The spelling of 102102553100 in words is "one hundred two billion, one hundred two million, five hundred fifty-three thousand, one hundred".