102021001010100 has 108 divisors (see below), whose sum is σ = 319818725020704. Its totient is φ = 27202234213440.

The previous prime is 102021001009999. The next prime is 102021001010119. The reversal of 102021001010100 is 1010100120201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 269727 + ... + 14286873.

Almost surely, 2^{102021001010100} is an apocalyptic number.

102021001010100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102021001010100 is an abundant number, since it is smaller than the sum of its proper divisors (217797724010604).

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

102021001010100 is a wasteful number, since it uses less digits than its factorization.

102021001010100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14025254 (or 14025244 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 102021001010100 its reverse (1010100120201), we get a palindrome (103031101130301).

The spelling of 102021001010100 in words is "one hundred two trillion, twenty-one billion, one million, ten thousand, one hundred".