1012021121201 has 8 divisors (see below), whose sum is σ = 1022211268200. Its totient is φ = 1001834310400.

The previous prime is 1012021121197. The next prime is 1012021121227. The reversal of 1012021121201 is 1021211202101.

It can be written as a sum of positive squares in 4 ways, for example, as 939242031025 + 72779090176 = 969145^2 + 269776^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1012021121201 - 2² = 1012021121197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012021021201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222056 + ... + 1439913.

It is an arithmetic number, because the mean of its divisors is an integer number (127776408525).

Almost surely, 2^{1012021121201} is an apocalyptic number.

It is an amenable number.

1012021121201 is a deficient number, since it is larger than the sum of its proper divisors (10190146999).

1012021121201 is a wasteful number, since it uses less digits than its factorization.

1012021121201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1668099.

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

Adding to 1012021121201 its reverse (1021211202101), we get a palindrome (2033232323302).

The spelling of 1012021121201 in words is "one trillion, twelve billion, twenty-one million, one hundred twenty-one thousand, two hundred one".