211211121320101 has 8 divisors (see below), whose sum is σ = 246310345563200. Its totient is φ = 181038103988364.

The previous prime is 211211121320053. The next prime is 211211121320113. The reversal of 211211121320101 is 101023121112112.

It is not a de Polignac number, because 211211121320101 - 2¹¹ = 211211121318053 is a prime.

It is a super-2 number, since 2×211211121320101² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211211121320161) 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, 307887931611 + ... + 307887932296.

It is an arithmetic number, because the mean of its divisors is an integer number (30788793195400).

Almost surely, 2^{211211121320101} is an apocalyptic number.

It is an amenable number.

211211121320101 is a deficient number, since it is larger than the sum of its proper divisors (35099224243099).

211211121320101 is an frugal number, since it uses more digits than its factorization.

211211121320101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615775863928 (or 615775863914 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 211211121320101 its reverse (101023121112112), we get a palindrome (312234242432213).

The spelling of 211211121320101 in words is "two hundred eleven trillion, two hundred eleven billion, one hundred twenty-one million, three hundred twenty thousand, one hundred one".