100021210001321 has 32 divisors (see below), whose sum is σ = 126301288711680. Its totient is φ = 77178170336256.

The previous prime is 100021210001311. The next prime is 100021210001327. The reversal of 100021210001321 is 123100012120001.

It is a cyclic number.

It is not a de Polignac number, because 100021210001321 - 2⁶ = 100021210001257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100021210001296 and 100021210001305.

It is not an unprimeable number, because it can be changed into a prime (100021210001327) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71666915 + ... + 73049223.

It is an arithmetic number, because the mean of its divisors is an integer number (3946915272240).

Almost surely, 2^{100021210001321} is an apocalyptic number.

It is an amenable number.

100021210001321 is a deficient number, since it is larger than the sum of its proper divisors (26280078710359).

100021210001321 is a wasteful number, since it uses less digits than its factorization.

100021210001321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1408793.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 100021210001321 its reverse (123100012120001), we get a palindrome (223121222121322).

The spelling of 100021210001321 in words is "one hundred trillion, twenty-one billion, two hundred ten million, one thousand, three hundred twenty-one".