1200214121 has 4 divisors (see below), whose sum is σ = 1200361872. Its totient is φ = 1200066372.

The previous prime is 1200214117. The next prime is 1200214123. The reversal of 1200214121 is 1214120021.

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: 1214120021 = 23 ⋅52787827.

It is a cyclic number.

It is not a de Polignac number, because 1200214121 - 2² = 1200214117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200214096 and 1200214105.

It is not an unprimeable number, because it can be changed into a prime (1200214123) 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, 60935 + ... + 78188.

It is an arithmetic number, because the mean of its divisors is an integer number (300090468).

Almost surely, 2^1200214121 is an apocalyptic number.

It is an amenable number.

1200214121 is a deficient number, since it is larger than the sum of its proper divisors (147751).

1200214121 is an equidigital number, since it uses as much as digits as its factorization.

1200214121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147750.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1200214121 is about 34644.1065839487. The cubic root of 1200214121 is about 1062.7217702891.

Adding to 1200214121 its reverse (1214120021), we get a palindrome (2414334142).

The spelling of 1200214121 in words is "one billion, two hundred million, two hundred fourteen thousand, one hundred twenty-one".