102000011001220 has 24 divisors (see below), whose sum is σ = 214204439542464. Its totient is φ = 40799163173856.

The previous prime is 102000011001209. The next prime is 102000011001223. The reversal of 102000011001220 is 22100110000201.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 102000011001197 and 102000011001206.

It is not an unprimeable number, because it can be changed into a prime (102000011001223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51581944 + ... + 53522863.

It is an arithmetic number, because the mean of its divisors is an integer number (8925184980936).

Almost surely, 2^{102000011001220} is an apocalyptic number.

102000011001220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102000011001220 is an abundant number, since it is smaller than the sum of its proper divisors (112204428541244).

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

102000011001220 is a wasteful number, since it uses less digits than its factorization.

102000011001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105153339 (or 105153337 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 102000011001220 its reverse (22100110000201), we get a palindrome (124100121001421).

The spelling of 102000011001220 in words is "one hundred two trillion, eleven million, one thousand, two hundred twenty".