211220212201 has 4 divisors (see below), whose sum is σ = 220403699712. Its totient is φ = 202036724692.

The previous prime is 211220212199. The next prime is 211220212241. The reversal of 211220212201 is 102212022112.

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.

It is a cyclic number.

It is not a de Polignac number, because 211220212201 - 2¹ = 211220212199 is a prime.

It is a super-2 number, since 2×211220212201² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211220212241) 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, 4591743721 + ... + 4591743766.

It is an arithmetic number, because the mean of its divisors is an integer number (55100924928).

Almost surely, 2^211220212201 is an apocalyptic number.

It is an amenable number.

211220212201 is a deficient number, since it is larger than the sum of its proper divisors (9183487511).

211220212201 is an equidigital number, since it uses as much as digits as its factorization.

211220212201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9183487510.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 211220212201 its reverse (102212022112), we get a palindrome (313432234313).

The spelling of 211220212201 in words is "two hundred eleven billion, two hundred twenty million, two hundred twelve thousand, two hundred one".