121010110210021 has 8 divisors (see below), whose sum is σ = 123266573352000. Its totient is φ = 118760495212320.

The previous prime is 121010110210009. The next prime is 121010110210039. The reversal of 121010110210021 is 120012011010121.

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 not a de Polignac number, because 121010110210021 - 2¹³ = 121010110201829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121010110209983 and 121010110210010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121010110210051) 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, 1712000400 + ... + 1712071081.

It is an arithmetic number, because the mean of its divisors is an integer number (15408321669000).

Almost surely, 2^{121010110210021} is an apocalyptic number.

It is an amenable number.

121010110210021 is a deficient number, since it is larger than the sum of its proper divisors (2256463141979).

121010110210021 is an equidigital number, since it uses as much as digits as its factorization.

121010110210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3424072139.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 121010110210021 its reverse (120012011010121), we get a palindrome (241022121220142).

The spelling of 121010110210021 in words is "one hundred twenty-one trillion, ten billion, one hundred ten million, two hundred ten thousand, twenty-one".