10120021121 has 8 divisors (see below), whose sum is σ = 11568553920. Its totient is φ = 8672192208.

The previous prime is 10120021099. The next prime is 10120021141. The reversal of 10120021121 is 12112002101.

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 10120021121 - 2¹⁸ = 10119758977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10120021141) 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, 144791 + ... + 202988.

It is an arithmetic number, because the mean of its divisors is an integer number (1446069240).

Almost surely, 2^10120021121 is an apocalyptic number.

It is an amenable number.

10120021121 is a deficient number, since it is larger than the sum of its proper divisors (1448532799).

10120021121 is an equidigital number, since it uses as much as digits as its factorization.

10120021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351943.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 10120021121 its reverse (12112002101), we get a palindrome (22232023222).

The spelling of 10120021121 in words is "ten billion, one hundred twenty million, twenty-one thousand, one hundred twenty-one".