100102001011020 has 36 divisors (see below), whose sum is σ = 303642736400640. Its totient is φ = 26693866936224.

The previous prime is 100102001010997. The next prime is 100102001011097. The reversal of 100102001011020 is 20110100201001.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×100102001011020² (a number of 29 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 100102001010993 and 100102001011011.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 278061113740 + ... + 278061114099.

Almost surely, 2^{100102001011020} is an apocalyptic number.

100102001011020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100102001011020 is an abundant number, since it is smaller than the sum of its proper divisors (203540735389620).

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

100102001011020 is a wasteful number, since it uses less digits than its factorization.

100102001011020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556122227854 (or 556122227849 counting only the distinct ones).

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

Adding to 100102001011020 its reverse (20110100201001), we get a palindrome (120212101212021).

The spelling of 100102001011020 in words is "one hundred trillion, one hundred two billion, one million, eleven thousand, twenty".