120020100121 has 4 divisors (see below), whose sum is σ = 120558307072. Its totient is φ = 119481893172.

The previous prime is 120020100103. The next prime is 120020100143. The reversal of 120020100121 is 121001020021.

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: 121001020021 = 7 ⋅17285860003.

It is a cyclic number.

It is not a de Polignac number, because 120020100121 - 2²¹ = 120018002969 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120020100098 and 120020100107.

It is not an unprimeable number, because it can be changed into a prime (120020100821) 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, 269103141 + ... + 269103586.

It is an arithmetic number, because the mean of its divisors is an integer number (30139576768).

Almost surely, 2^120020100121 is an apocalyptic number.

It is an amenable number.

120020100121 is a deficient number, since it is larger than the sum of its proper divisors (538206951).

120020100121 is an equidigital number, since it uses as much as digits as its factorization.

120020100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538206950.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 120020100121 its reverse (121001020021), we get a palindrome (241021120142).

The spelling of 120020100121 in words is "one hundred twenty billion, twenty million, one hundred thousand, one hundred twenty-one".