120221431 has 4 divisors (see below), whose sum is σ = 131150664. Its totient is φ = 109292200.

The previous prime is 120221429. The next prime is 120221447. The reversal of 120221431 is 134122021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 120221431 - 2¹ = 120221429 is a prime.

It is a super-2 number, since 2×120221431² = 28906384943375522, 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 (120221401) 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, 5464600 + ... + 5464621.

It is an arithmetic number, because the mean of its divisors is an integer number (32787666).

Almost surely, 2^120221431 is an apocalyptic number.

120221431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

120221431 is a deficient number, since it is larger than the sum of its proper divisors (10929233).

120221431 is a wasteful number, since it uses less digits than its factorization.

120221431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10929232.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 120221431 is about 10964.5533880774. The cubic root of 120221431 is about 493.5456150071.

Adding to 120221431 its reverse (134122021), we get a palindrome (254343452).

The spelling of 120221431 in words is "one hundred twenty million, two hundred twenty-one thousand, four hundred thirty-one".