100100001021210 has 64 divisors (see below), whose sum is σ = 266934232978560. Its totient is φ = 26693243913600.

The previous prime is 100100001021197. The next prime is 100100001021271. The reversal of 100100001021210 is 12120100001001.

It is a happy number.

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 = 100100001021192 and 100100001021201.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132368734 + ... + 133122806.

It is an arithmetic number, because the mean of its divisors is an integer number (4170847390290).

Almost surely, 2^{100100001021210} is an apocalyptic number.

100100001021210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100100001021210 is an abundant number, since it is smaller than the sum of its proper divisors (166834231957350).

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

100100001021210 is a wasteful number, since it uses less digits than its factorization.

100100001021210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1245740 (or 1245734 counting only the distinct ones).

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

Adding to 100100001021210 its reverse (12120100001001), we get a palindrome (112220101022211).

The spelling of 100100001021210 in words is "one hundred trillion, one hundred billion, one million, twenty-one thousand, two hundred ten".