212021102111 has 16 divisors (see below), whose sum is σ = 261246694464. Its totient is φ = 167561616384.

The previous prime is 212021102093. The next prime is 212021102131. The reversal of 212021102111 is 111201120212.

It is a cyclic number.

It is not a de Polignac number, because 212021102111 - 2¹⁰ = 212021101087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021102131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1248530 + ... + 1408143.

It is an arithmetic number, because the mean of its divisors is an integer number (16327918404).

Almost surely, 2^212021102111 is an apocalyptic number.

212021102111 is a deficient number, since it is larger than the sum of its proper divisors (49225592353).

212021102111 is a wasteful number, since it uses less digits than its factorization.

212021102111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2657570.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 212021102111 its reverse (111201120212), we get a palindrome (323222222323).

The spelling of 212021102111 in words is "two hundred twelve billion, twenty-one million, one hundred two thousand, one hundred eleven".