211213121101 has 8 divisors (see below), whose sum is σ = 212403027200. Its totient is φ = 210023467920.

The previous prime is 211213121027. The next prime is 211213121113. The reversal of 211213121101 is 101121312112.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211213121101 is a prime.

It is a super-2 number, since 2×211213121101² (a number of 23 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 (211213122101) 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, 1758940 + ... + 1875178.

It is an arithmetic number, because the mean of its divisors is an integer number (26550378400).

Almost surely, 2^211213121101 is an apocalyptic number.

It is an amenable number.

211213121101 is a deficient number, since it is larger than the sum of its proper divisors (1189906099).

211213121101 is a wasteful number, since it uses less digits than its factorization.

211213121101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126459.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 211213121101 its reverse (101121312112), we get a palindrome (312334433213).

It can be divided in two parts, 211 and 213121101, that added together give a palindrome (213121312).

The spelling of 211213121101 in words is "two hundred eleven billion, two hundred thirteen million, one hundred twenty-one thousand, one hundred one".