1211212020201 has 8 divisors (see below), whose sum is σ = 1615248834720. Its totient is φ = 807324942912.

The previous prime is 1211212020143. The next prime is 1211212020211. The reversal of 1211212020201 is 1020202121121.

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

It is not a de Polignac number, because 1211212020201 - 2¹¹ = 1211212018153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1211212020211) 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, 37415431 + ... + 37447788.

It is an arithmetic number, because the mean of its divisors is an integer number (201906104340).

Almost surely, 2^{1211212020201} is an apocalyptic number.

It is an amenable number.

1211212020201 is a deficient number, since it is larger than the sum of its proper divisors (404036814519).

1211212020201 is an equidigital number, since it uses as much as digits as its factorization.

1211212020201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74868615.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1211212020201 its reverse (1020202121121), we get a palindrome (2231414141322).

The spelling of 1211212020201 in words is "one trillion, two hundred eleven billion, two hundred twelve million, twenty thousand, two hundred one".