211220210101201 has 4 divisors (see below), whose sum is σ = 241394525829952. Its totient is φ = 181045894372452.

The previous prime is 211220210101051. The next prime is 211220210101217. The reversal of 211220210101201 is 102101012022112.

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 211220210101201 - 2¹⁵ = 211220210068433 is a prime.

It is a super-2 number, since 2×211220210101201² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211220210101601) 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, 15087157864365 + ... + 15087157864378.

It is an arithmetic number, because the mean of its divisors is an integer number (60348631457488).

Almost surely, 2^{211220210101201} is an apocalyptic number.

It is an amenable number.

211220210101201 is a deficient number, since it is larger than the sum of its proper divisors (30174315728751).

211220210101201 is an equidigital number, since it uses as much as digits as its factorization.

211220210101201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30174315728750.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 211220210101201 its reverse (102101012022112), we get a palindrome (313321222123313).

The spelling of 211220210101201 in words is "two hundred eleven trillion, two hundred twenty billion, two hundred ten million, one hundred one thousand, two hundred one".