10121021101 has 4 divisors (see below), whose sum is σ = 10121262304. Its totient is φ = 10120779900.

The previous prime is 10121021087. The next prime is 10121021149. The reversal of 10121021101 is 10112012101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10112012101 = 173 ⋅58450937.

It is a cyclic number.

It is not a de Polignac number, because 10121021101 - 2²⁷ = 9986803373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10121001101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39465 + ... + 147646.

It is an arithmetic number, because the mean of its divisors is an integer number (2530315576).

Almost surely, 2^10121021101 is an apocalyptic number.

It is an amenable number.

10121021101 is a deficient number, since it is larger than the sum of its proper divisors (241203).

10121021101 is an equidigital number, since it uses as much as digits as its factorization.

10121021101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241202.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 10121021101 its reverse (10112012101), we get a palindrome (20233033202).

The spelling of 10121021101 in words is "ten billion, one hundred twenty-one million, twenty-one thousand, one hundred one".