1212021002201 has 4 divisors (see below), whose sum is σ = 1222746851892. Its totient is φ = 1201295152512.

The previous prime is 1212021002167. The next prime is 1212021002249. The reversal of 1212021002201 is 1022001202121.

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

It can be written as a sum of positive squares in 2 ways, for example, as 599207587225 + 612813414976 = 774085^2 + 782824^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212021002201 - 2¹⁸ = 1212020740057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212021007201) 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, 5362924676 + ... + 5362924901.

It is an arithmetic number, because the mean of its divisors is an integer number (305686712973).

Almost surely, 2^{1212021002201} is an apocalyptic number.

It is an amenable number.

1212021002201 is a deficient number, since it is larger than the sum of its proper divisors (10725849691).

1212021002201 is a wasteful number, since it uses less digits than its factorization.

1212021002201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10725849690.

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

Adding to 1212021002201 its reverse (1022001202121), we get a palindrome (2234022204322).

The spelling of 1212021002201 in words is "one trillion, two hundred twelve billion, twenty-one million, two thousand, two hundred one".