102100311001021 has 8 divisors (see below), whose sum is σ = 102845809626624. Its totient is φ = 101354815866720.

The previous prime is 102100311001001. The next prime is 102100311001037. The reversal of 102100311001021 is 120100113001201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102100311001021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102100311000992 and 102100311001010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102100311001001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101497506 + ... + 102498508.

It is an arithmetic number, because the mean of its divisors is an integer number (12855726203328).

Almost surely, 2^{102100311001021} is an apocalyptic number.

It is an amenable number.

102100311001021 is a deficient number, since it is larger than the sum of its proper divisors (745498625603).

102100311001021 is a wasteful number, since it uses less digits than its factorization.

102100311001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1745651.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 102100311001021 its reverse (120100113001201), we get a palindrome (222200424002222).

The spelling of 102100311001021 in words is "one hundred two trillion, one hundred billion, three hundred eleven million, one thousand, twenty-one".