120101110421 has 2 divisors, whose sum is σ = 120101110422. Its totient is φ = 120101110420.

The previous prime is 120101110391. The next prime is 120101110427. The reversal of 120101110421 is 124011101021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85679729521 + 34421380900 = 292711^2 + 185530^2 .

It is an emirp because it is prime and its reverse (124011101021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120101110421 - 2¹⁴ = 120101094037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120101110396 and 120101110405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120101110427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60050555210 + 60050555211.

It is an arithmetic number, because the mean of its divisors is an integer number (60050555211).

Almost surely, 2^120101110421 is an apocalyptic number.

It is an amenable number.

120101110421 is a deficient number, since it is larger than the sum of its proper divisors (1).

120101110421 is an equidigital number, since it uses as much as digits as its factorization.

120101110421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 120101110421 its reverse (124011101021), we get a palindrome (244112211442).

The spelling of 120101110421 in words is "one hundred twenty billion, one hundred one million, one hundred ten thousand, four hundred twenty-one".