201211122021213 has 64 divisors (see below), whose sum is σ = 299509284372480. Its totient is φ = 119560297804800.

The previous prime is 201211122021163. The next prime is 201211122021263. The reversal of 201211122021213 is 312120221112102.

It is an interprime number because it is at equal distance from previous prime (201211122021163) and next prime (201211122021263).

It is not a de Polignac number, because 201211122021213 - 2⁸ = 201211122020957 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201211122021213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201211122021263) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 510217678 + ... + 510611888.

It is an arithmetic number, because the mean of its divisors is an integer number (4679832568320).

Almost surely, 2^{201211122021213} is an apocalyptic number.

It is an amenable number.

201211122021213 is a deficient number, since it is larger than the sum of its proper divisors (98298162351267).

201211122021213 is a wasteful number, since it uses less digits than its factorization.

201211122021213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401178.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 201211122021213 its reverse (312120221112102), we get a palindrome (513331343133315).

The spelling of 201211122021213 in words is "two hundred one trillion, two hundred eleven billion, one hundred twenty-two million, twenty-one thousand, two hundred thirteen".