120101020121 has 4 divisors (see below), whose sum is σ = 120414600192. Its totient is φ = 119787440052.

The previous prime is 120101020027. The next prime is 120101020219. The reversal of 120101020121 is 121020101021.

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: 121020101021 = 41 ⋅2951709781.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120101020121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120121020121) 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, 156789461 + ... + 156790226.

It is an arithmetic number, because the mean of its divisors is an integer number (30103650048).

Almost surely, 2^120101020121 is an apocalyptic number.

It is an amenable number.

120101020121 is a deficient number, since it is larger than the sum of its proper divisors (313580071).

120101020121 is an equidigital number, since it uses as much as digits as its factorization.

120101020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313580070.

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

Adding to 120101020121 its reverse (121020101021), we get a palindrome (241121121142).

The spelling of 120101020121 in words is "one hundred twenty billion, one hundred one million, twenty thousand, one hundred twenty-one".