120122101021 has 4 divisors (see below), whose sum is σ = 129362262652. Its totient is φ = 110881939392.

The previous prime is 120122100961. The next prime is 120122101037. The reversal of 120122101021 is 120101221021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120101221021 = 419 ⋅286637759.

It can be written as a sum of positive squares in 2 ways, for example, as 33619056025 + 86503044996 = 183355^2 + 294114^2 .

It is a cyclic number.

It is not a de Polignac number, because 120122101021 - 2¹⁷ = 120121969949 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 9240161617 = 120122101021 / (1 + 2 + 0 + 1 + 2 + 2 + 1 + 0 + 1 + 0 + 2 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120122100992 and 120122101010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120122101921) 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, 4620080796 + ... + 4620080821.

It is an arithmetic number, because the mean of its divisors is an integer number (32340565663).

Almost surely, 2^120122101021 is an apocalyptic number.

It is an amenable number.

120122101021 is a deficient number, since it is larger than the sum of its proper divisors (9240161631).

120122101021 is an equidigital number, since it uses as much as digits as its factorization.

120122101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9240161630.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 120122101021 its reverse (120101221021), we get a palindrome (240223322042).

The spelling of 120122101021 in words is "one hundred twenty billion, one hundred twenty-two million, one hundred one thousand, twenty-one".