120021299 has 4 divisors (see below), whose sum is σ = 122812536. Its totient is φ = 117230064.

The previous prime is 120021289. The next prime is 120021323. The reversal of 120021299 is 992120021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 992120021 = 5639 ⋅175939.

It is a cyclic number.

It is not a de Polignac number, because 120021299 - 2¹² = 120017203 is a prime.

It is a super-2 number, since 2×120021299² = 28810224427294802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120021289) 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, 1395554 + ... + 1395639.

It is an arithmetic number, because the mean of its divisors is an integer number (30703134).

Almost surely, 2^120021299 is an apocalyptic number.

120021299 is a deficient number, since it is larger than the sum of its proper divisors (2791237).

120021299 is an equidigital number, since it uses as much as digits as its factorization.

120021299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2791236.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 120021299 is about 10955.4232688655. The cubic root of 120021299 is about 493.2715952792.

The spelling of 120021299 in words is "one hundred twenty million, twenty-one thousand, two hundred ninety-nine".