120201421 has 4 divisors (see below), whose sum is σ = 120236832. Its totient is φ = 120166012.

The previous prime is 120201409. The next prime is 120201437. The reversal of 120201421 is 124102021.

It is a happy number.

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: 124102021 = 31 ⋅4003291.

It is a cyclic number.

It is not a de Polignac number, because 120201421 - 2¹⁹ = 119677133 is a prime.

It is a super-2 number, since 2×120201421² = 28896763220838482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120201451) 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, 12001 + ... + 19606.

It is an arithmetic number, because the mean of its divisors is an integer number (30059208).

Almost surely, 2^120201421 is an apocalyptic number.

It is an amenable number.

120201421 is a deficient number, since it is larger than the sum of its proper divisors (35411).

120201421 is an equidigital number, since it uses as much as digits as its factorization.

120201421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35410.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 120201421 is about 10963.6408642385. The cubic root of 120201421 is about 493.5182311049.

Adding to 120201421 its reverse (124102021), we get a palindrome (244303442).

The spelling of 120201421 in words is "one hundred twenty million, two hundred one thousand, four hundred twenty-one".