211201000212111 has 64 divisors (see below), whose sum is σ = 348085865487360. Its totient is φ = 110921711662080.

The previous prime is 211201000212077. The next prime is 211201000212119. The reversal of 211201000212111 is 111212000102112.

It is a happy number.

It is not a de Polignac number, because 211201000212111 - 2²¹ = 211200998114959 is a prime.

It is a super-2 number, since 2×211201000212111² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211201000212119) 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, 58897011 + ... + 62379963.

It is an arithmetic number, because the mean of its divisors is an integer number (5438841648240).

Almost surely, 2^{211201000212111} is an apocalyptic number.

211201000212111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

211201000212111 is a deficient number, since it is larger than the sum of its proper divisors (136884865275249).

211201000212111 is a wasteful number, since it uses less digits than its factorization.

211201000212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3483936.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 211201000212111 its reverse (111212000102112), we get a palindrome (322413000314223).

The spelling of 211201000212111 in words is "two hundred eleven trillion, two hundred one billion, two hundred twelve thousand, one hundred eleven".