100001021201010 has 48 divisors (see below), whose sum is σ = 267029753918616. Its totient is φ = 25946210905344.

The previous prime is 100001021200979. The next prime is 100001021201113. The reversal of 100001021201010 is 10102120100001.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 99276971671089 + 724049529921 = 9963783^2 + 850911^2 .

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 = 100001021200983 and 100001021201001.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15015165019 + ... + 15015171678.

Almost surely, 2^{100001021201010} is an apocalyptic number.

100001021201010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100001021201010 is an abundant number, since it is smaller than the sum of its proper divisors (167028732717606).

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

100001021201010 is a wasteful number, since it uses less digits than its factorization.

100001021201010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30030336747 (or 30030336744 counting only the distinct ones).

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

Adding to 100001021201010 its reverse (10102120100001), we get a palindrome (110103141301011).

The spelling of 100001021201010 in words is "one hundred trillion, one billion, twenty-one million, two hundred one thousand, ten".